MicriK 2 Fig. 1. Temperature ctroller R7426B,C TEMPERATURE CONTROLLER WITH REAL-TIME CLOCK SPECIFICATION DATA GENERAL The R7426B,C temperature ctrollers cover all space and/or discharge air temperature applicatis within the specified ctrol range of...5 C (LOw range) requiring sequence operati of heating, mixed air damper or energy recovery system and cooling with optial outside air temperature compensati reset of the main setpoint. The ctrollers can be cfigured to perform space or discharge air or spacedischarge air temperature cascade ctrol with limit ctrol. For special higher temperature ctrol applicatis, the ctrol range...13 C (HI range) can be selected. FEATURES Weekly time schedule with up to six switching points per day Automatic daylight saving time change Four different operating modes: Comfort, Standby, Night, and OFF Yearly holiday programming in advance Three types of holiday schedules Self-adaptive optimum start program for room ctrol system Night cycle program Order Numbers Fig. 2. LC Display Order-No. R7426B212 R7426C21 Ctroller Descripti Temperature ctroller with integrated real time clock (RTC), Plant/System ON/OFF output, and three 3-positi floating outputs. The ctroller ers the choice of selectable different output sequence operatis and output signals suitable to drive solid-state relays or step relays. Temperature ctroller with integrated real time clock (RTC), Plant/System ON/OFF output, and three analog outputs. The ctroller ers selecti of different output sequence operatis. ENB-31GE51 R14
TECHNICAL DATA General Electric 8-bit microctroller, 1-bit A/D cverter, EEPROM, and LC display Power supply 24 Vac +1...-15%, 5/6 Hz Power csumpti 3 VA + Actuator power requirements Ctrol range...5 C Battery Type CR232 (life time 8 years) Temperature T1 Main temperature sensor Inputs T2 Cascade temperature sensor T3 Compensati temperature sensor Sensor type 1) Automatic identificati of sensor type Temperature range Characteristics 2) accuracy.5 K excluding sensor Pt 1-3...+13 C 1 τ at C BALCO 5-3...+13 C 5 τ at 23.3 C NTC 2kτ -3...+85 C / -3...+13 C 1) 2 kτ at 25 C CPA/SPA-Input 1) CPA/SPA range Sensor & CPA/SPA types CPATYP CPA: 5 K internal CPATYP 1 (953...153 τ) CPA: 5 K T7412B116 (Pt 1) CPATYP 2 (...1 kτ) CPA: 5 K T7412B157 (Pt 1) T7412C13 (Pt 1) T7412B18 (NTC 2kτ) T7412C16 (NTC 2kτ) CPATYP 3 (1...2 kτ) SPA: 15...3 C T7412B124 (BALCO 5) T7412B14 (Pt 1) CPATYP 4 (...1 kτ) CPA: 5 K HCW 23 (setpoint wheel printed with +/- 5 K) CPATYP 5 (...1 kτ) SPA: 15...3 C 43193982-1 CPATYP 6 (...1 kτ) SPA:...5 C or...13 C 43193982-1 Analog input Humidity deviati (X wrh) -5...+5 Vdc, 2 mv / %rh Digital inputs Mode Potential free ctact Occupancy Freeze protecti input unoccupied occupied freeze protecti operati normal operati Outputs ON/OFF output OFF / ON TRIAC outputs Floating 1) 2, 3, 4, 6 or 15-stage 1) ON (24 Vac) / OFF ( Vac) Pulse-width modulati 1)...1% based run time Analog outputs ctroller R7426C Ctrol range 1) /2...1 Vdc (...1%) full range...12 Vdc Ambient limits Operating temperature...5 C (...122 F) Transport and storage temperature -35...+7 C (-31...+158 F) Relative humidity 5...95%rh n-cdensing open > 4 kτ closed < 1 τ open > 4 kτ closed < 1 τ max. load 45 ma at 24 Vac per output max. load 1.2 ma at 12 Vdc Safety Protecti class II as per EN673-1 Protecti standard IP3 or IP4 (frt panel mounting) as per EN6529 Housing Dimensis (H x W x D) 15 x 152 x 37 mm Weight 25 g Mounting Frt door, back panel, wall, or rail Cnectis Cnecti terminal terminals max. 1 x 1.5 mm 2 1) Selectable 2) same sensor type must be used for T1, T2, and T3 ENB-31GE51 R14 2
CONTROL AND CONFIGURATION PARAMETER Ctrol Parameter No. Name Parameter Descripti Setting Low High Default Resoluti P.1 W1 Main setpoint for input T1 5 21.5 C P.2 Wlim Limit setpoint (low or high) for input T2 5 5 16 1 C P.3 Wcomp Compensati changeover point for input T3-5 4 2 1 C P.4 Wi Winter compensati authority -35 +35 2 % P.5 Su Summer compensati authority -1 +1 1 % P.6 Wcas Submaster or cascade setpoint OFF, 5 2.5 C P.7 Rcas Cascade reset span adjustment 4 1.5 K P.8 Xp1 Throttling range (main ctrol loop) T1.5 4 2.5 K P.9 Xp2 Throttling range (cascade ctrol loop) T2.5 4 1.5 K P.1 throttling range for sequence ctrol OFF, 1 4 3.5 K P.11 throttling range for sequence ctrol 1 4 6.5 K P.12 tr1 1) Reset time (main ctrol loop) T1 OFF, 2 s 2min OFF 1/.5 sec/min P.13 tr2 1) Reset time (cascade ctrol loop) T2 OFF, 2 s 2min OFF 1/.5 sec/min P.14 MINPOS Minimal pos. for air damper actuators 5 2 1 % P.15 Ystart Start point for mid range shift of output -2 +2.5 K P.16 SOFFS Offset of main setpoint in Standby mode 1 2.1 K P.17 T1Cal Calibrati of temperature sensor T1-2 +2.1 K P.18 T2Cal Calibrati of temperature sensor T2-2 +2.1 K P.19 T3Cal Calibrati of temperature sensor T3-2 +2.1 K P.2 RetOffs Return air set to simulate exhaust air cd. OFF, 5 OFF.1 K P.21 Runtime Actuator run time for output 6 18 6 1 sec P.22 Runtime Actuator run time for output 6 18 6 1 sec P.23 Runtime Actuator run time for output 6 18 6 1 sec P.24 NightLow Night low limit against temperature extremes OFF, 8 19 OFF 1 C P.25 NightHigh Night high limit against temperature extremes OFF, 21 4 OFF 1 C P.26 NOFFS Offset of main setpoint in Night mode 3 5.1 K Cfig. Parameter No. Name Unit Values Default Unit C.1 DIR/REV Dir C.2 DIR/REV Dir, Rev (R7426C, ly) Dir C.3 DIR/REV Dir C.4 Ctrltyp 2) Lo =...5 C (factory preset), Hi1 =...13 C, Hi2 =...13 C C.5 CPATYP = internal (default), 1 = 5 K (953...153 τ), 2 = 5 K ( τ...1kτ), 3 = 15 3 C (1...2 kτ), 4 = 5 K (...1 kτ), 5 = 15 3 C (...1 kτ), 6 =...5 C or...13 C (...1 kτ) C.6 YRange = 2 1 Vdc, 1 = 1 Vdc (R7426C, ly) 1 C.8 Mode 4 = floating, 1= 2 stage ON/OFF, 2= 3 stage ON/OFF, 3 = pwm, 4 = uncfig. C.9 Mode (safe state is cfigured prior to ctroller's start-up) (R7426B, ly) 4 C.1 Mode 4 : = D, = C, = H 1: /2/1 = H or C C.11 YMode 2: /1 = H, = C 3: /1 = C, = H 4: = 2Pos D, = C, = H 5: /1 = 15H, = C C.12 T2ext = T2 installed 1 = T1 signal used for T2 C.13 LimTyp = Low limit 1 = High limit C.14 Senstyp = Auto detecti 1 = NTC sensor type C.15 CTRF Output used for: = mixed air damper 1= energy recovery C.16 AddHour Adjusts the mth for winter/summer time change: (disabled) = Min. 12 = Max. 3 mth C.17 SubHour Adjusts the mth for summer/winter time change: (disabled) = Min. 12 = Max. 1 mth 3 ENB-31GE51 R14
1) 2) 3) Cfig. Parameter No. Name Values Default Unit C.18 PSTG_H 3) Prestart gradient for heating: (disabled) = Min. 2 = Max. K/min C.19 PSTG_C 3) Prestart gradient for cooling: (disabled) = Min. 2 = Max K/min C.2 tvd Use damper before comfort time: (normal ctrol) = Min. 9 = Max. 15 min C.21 Adapt Optimum Start Self Adapti speed: = Min. 1 = Max. 5 % C.22 Adr 2) Serial communicati address: = Min. 255 = Max. 254 C.23 DefProg = No Default programming 1 = Initiates Default programming for tr > 2 min resoluti =.5 min, for tr < 2 min resoluti = 1 sec actual value will not be changed during reset to default parameter can be overwritten by ctroller for self-adapti purposes, resoluti =.1 K/min FUNCTIONS Real-Time Clock The time clock performs automatic change of the ctroller mode to OFF, Night, Standby, or Comfort in accordance with the programmed time schedule. In Standby or Night mode, the SOFFS or NOFFS is added (cooling) to and subtracted (heating) from the calculated ctrol point. Schedules for e week and up to six switching points per day can be programmed in advance and repeated week after week. In additi, three different holiday schedule types H1, H2 and H3 can be programmed. One of these holiday types can be assigned to each holiday date of the year (1.1.... 31.12.). Holiday type H1 and H2 is valid ly for this specific day and is reset to normal time schedule at midnight of that day. H3 is valid for every year and repeated year after year for fixed holiday dates. H1 can be programmed to be in OFF mode the whole day and H2 to be ON for a short period of time the last day of a lger holiday period to preheat or precool the space in advance before the first occupied day. Optimum Start Program The optimum start program s objective is to minimize total energy csumpti by calculating in room ctrol applicatis the start time for heating and cooling mode which will bring its respective space temperature to the boundary of the comfort ze at the time of occupancy start. The program will start the ventilati system at the calculated start time with forced return air recirculati mixed air damper positi or full energy recovery valve positi to minimize energy csumpti during the start-up period. At a programmable time before occupancy start, the ctroller will switch the output signal to normal and will supply fresh air to the space in mixed air applicatis. The optimum start program uses historical data for self-adaptive adjustment. Night Cycle Program The night cycle program ers not ly energy cservati, but also the ability to assign OFF mode night low or high limits with 1 K hysteresis for the protecti of a space and its ctents against temperature extremes. It automatically cycles between the user selected upper and lower limits and turns full heating or cooling whenever the limits are reached. APPLICATION The R7426B,C ctrollers can be used for sequence ctrol applicatis of heating, mixed air damper or energy recovery system, and cooling. NOTE: All diagrams show proportial ctrol acti, ly. If P+I ctrol is in operati, the slopes for heating and cooling are not defined. Temperature Sequence Ctrol with, Mixed Air Dampers, and This applicati will be active with the R7426B,C ctrollers when T2 is not cnected. It can be used for sequence ctrol of a heating valve, a mixed air damper, and a cooling valve. The characteristic of each output the R7426C ctroller can be selected via the ctrol parameters DIR/REVx (x =,, or ). The diagram shows Dir characteristic for all outputs. Within the range Xp1, the damper signal is ctrolled as shown in the diagram below. If no cooling actuator is available, the ctrol parameter can be set to OFF and the damper output is maintained at 1% above ctrol point (CTRP1). If the damper output should be decreased to MINPOS level above ctrol point (CTRP1) as shown in the diagram, the ctrol parameter has to be adjusted to any value between 1 and 4 K, also if no cooling actuator is available. 1 MINPOS NOTE: 1/4 Xp1 if = Off Damper CTRPH CTRP1 Xp1 CTRPC if = Off Xwh / Xwc / Xwd If the R7426B ctroller with floating output is used for mixed air damper ctrol, you must ensure that the output load of maximum 45 ma is not exceeded. T2 ENB-31GE51 R14 4
1 Temperature Sequence Ctrol with, Energy Recovery System, and For applicatis with energy recovery system (ERS), the cfigurati parameter CTRF has to be set to 1 to perform a reverse acting output. The adjustment MINPOS is inactive in this cfigurati and the ctrol parameter has to be set to OFF if the output should be maintained at % above the ctrol point (CTRP1) for summer operati. Within the range Xp1, the energy recovery system is ctrolled as shown in the diagram below. With the R7426C ctroller, a rotary energy recovery wheel can also be ctrolled instead of a valve if the output signal of...1 Vdc or 2...1 Vdc is suitable to ctrol the rotati speed of this device. ERS 1/4 Xp1 R7426B,C TEMPERATURE CONTROLLER Low limit of CTRP2 is performed if ctrol parameter LimTyp = and high limit of CTRP2 is performed if ctrol parameter LimTyp = 1. Within the range Xp2, the damper signal is ctrolled as shown in the diagram below. If no cooling actuator is available, the ctrol parameter can be set to OFF. If ctrol parameter = OFF, the cooling signal is set to % and the damper output is maintained at 1 % above ctrol point (CTRP2). 1 MINPOS 1/4 Xp2 if = Off Damper CTRPH CTRP2 Xp2 CTRPC if = Off Xwh / Xwc / Xwd T2 = Xwh/Xwc/Xwd CTRPH CTRP1 CTRPC Xp1 T1 Temperature Cascade Ctrol with, Mixed Air Dampers, and This applicati will be active with the R7426B,C ctrollers if temperature sensor T2 is cnected and the ctrol parameter W cas is set to any value other than OFF. It can be used for sequence ctrol of a heating valve, a mixed air damper, and a cooling valve. The ctrollers provide cascade ctrol as shown below: T1 C Xp1/2 Offs Offs Xp1/2 CTRP1 MASTER NOTE: If the R7426B ctroller with floating output is used for mixed air damper ctrol, you must ensure that the output load of maximum 45 ma is not exceeded. Temperature Cascade Ctrol with, Energy Recovery System, and For applicatis with energy recovery system (ERS) the cfigurati parameter CTRF has to be set to 1 to perform a reverse acting output. The adjustment MINPOS is inactive in this cfigurati and the ctrol parameter must be set to OFF if the outputs and should be maintained at % above the ctrol point (CTRP2) for summer operati. Within the range Xp2, the energy recovery system is ctrolled as shown in the diagram below. In the case of the R7426C ctroller, a rotary energy recovery wheel can also be ctrolled instead of a valve if the output signal of...1 Vdc or 2...1 Vdc is suitable for ctrolling the rotati speed of this device. 1 ERS 1/4 Xp2 R cas R cas CTRP2 W lim W cas W lim Offs = X w Master for Comfort Mode SOFFS for Standby Mode NOFFS for Night Mode for LimTyp=1 SUBMASTER for LimTyp= X Master w = Xwh/Xwc/Xwd CTRPH CTRP2 CTRPC Xp2 T2 Ecomizer Modes The ecomizer modes are suitable for installatis where the main temperature sensor (T1) is installed in the exhaust air or in the room with a cstant set between room and exhaust air cditis. The set value is programmable within...5 K with the ctrol parameter RetOffs which will be added to the actual measured room temperature value to simulate exhaust air cditis. 5 ENB-31GE51 R14
The ecomizer mode is disabled if the value of the ctrol parameter RetOffs is programmed to OFF, or if no outdoor air temperature sensor is cnected. By comparing the outside air cditi with the exhaust air cditi, the output for the ctroller operates as follows: Mixed Air Dampers RetOffs OFF; CTRF = AIR CONDITION Outside air temperature > Exhaust air temperature Outside air temperature < Exhaust air temperature MINPOS Included in heating sequence ctrol (direct acting) CONTROLLER FUNCTIONS Outside Air Temperature Compensati Outside air temperature compensati is performed when T3 is cnected. The ctrol parameter W comp defines the compensati changeover point for summer and winter compensati. The degree of summer and winter compensati is defined by ctrol parameters Wi and Su. Winter compensati is performed if temperature T3 < W comp. Summer compensati is performed if temperature T3 > W comp. W1 compensated C W1 Wi Su Positive Negative 1 MINPOS Xp1 T1/T2 Xp2 A fixed hysteresis of 1K is used, to switch between MINPOS and actual signal. Energy Recovery System RetOffs OFF; CTRF = 1 AIR CONDITION CTRPH Outside air temperature > Exhaust air temperature Outside air temperature < Exhaust air temperature 1 Energy Recovery CTRPH T1+RetOffs T OA < T EA T OA > T EA Damper 1K CTRP1 CTRP2 1% CTRPC Xwh / Xwc Energy Recovery System included in heating sequence ctrol. MINPOS is not active. T1+RetOffs T OA < T EA T OA > T EA 1K CTRP1 CTRP2 Xp1 Xp2 CTRPC A fixed hysteresis of 1 K is used to switch between % positi and actual signal. Xwh / Xwc T1/T2 Smoothing Filter for Outside Air Temperature Input A smoothing filter for the outside air temperature input T3 is incorporated to eliminate sudden temperature variatis. This provides more stable operati of the ctrol system. This functi will work ly if the ctroller parameters have never been changed by means of the PC tool. Occupied/Unoccupied Functi (SOFFS) A potential free ctact can be used between terminals 1 and 4 to switch the ctroller between occupied (ctact closed) or unoccupied (ctact open) mode. The input is active during Comfort and Standby mode. In occupied mode, the temperature set point W1 is used for the ctrol point calculati. In unoccupied mode, the SOFFS parameter value is added (cooling) to and subtracted (heating) from the calculated ctrol point for cooling and heating. The diagram below shows the occupied/unoccupied functi for sequence ctrol. Y % 1 Freeze Protecti SOFFS CTRPH W comp unoccupied occupied CTRPC SOFFS If the ctact cnected to the freeze protecti input is open, the heating valve () will be driven into the fully open positi. The final ctrol devices operated by the outputs ( and ) will be driven in the closed positi. T3 T C C ENB-31GE51 R14 6
In the case of ctrollers with RTC, the ON/OFF output will be switched. A closed ctact performs a frost recovery: Cditis of Outdoor Temp. T3 > 6 C or T3 not cnected < 6 C Frost Recovery Main temperature ctrol Setpoint W1 is temporarily raised by Xp1 and linearly decreased to its normal value over approx. 1min. Freeze protecti operati has the highest priority over all other ctrol operatis. Dehumidificati Ctrol by Humidity Deviati Input Dehumidificati ctrol can also be performed using a humidity ctroller. The deviati input signal X w rh received from the humidity ctroller is compared with the cooling deviati signal of the temperature ctrol (X wc). The signal with the highest cooling demand is used to ctrol the cooling output. OUTPUT SEQUENCE OPERATION The ctrollers are supplied from the factory cfigured for sequence operati of heating, mixed air, and cooling ctrol. NOTE: If a ctrol range of...13 F (C.4 = 1) is selected, then ly multi-stage heating (Ymode = 1) is applicable. The output sequence operati can be cfigured for the following ctrol applicatis in accordance with the parameter setting CTRF or YMode: Sequence ctrol for cooling with three outputs (CTRF = and YMode = 1) 1 throttling range OAID Sequence ctrol for heating with three outputs (CTRF = 1 and YMode = 1) 1 OAID throttling range Xw Xw Sequence ctrol with two outputs for heating and e output for cooling (YMode = 2) 1 OAIC Sequence ctrol with e output for heating and two outputs for cooling (YMode = 3) 1 / OAIH OAIC OUTPUT FUNCTIONS The R7426B ctrollers provide a choice of output signals suitable for operating a range of final ctrol devices according to the parameter setting of YMode and YxMode (x = 1, 2, or 3) ctrol parameters. 3-positi Output for Valve or Damper Actuators (floating mode) The ctroller cverts the deviati signal to a proportial output pulse which drives the actuators depending the Runtimex (x =,, or ) parameter value. Parameter setting for / Ctrol Outputs : YMode =, 1, 2 or 3; YxMode (x = 1, 2, or 3) =. close out1 stop An automatic synchrizati functi ensures correct positiing of the actuators. This is performed by running all actuators to the closed positi periodically. The run time for synchrizati is derived by ctrol parameter RuntimeYx (x = 1, 2, or 3) multiplied by 1.25. Synchrizati by the ctroller is initiated: after power up reset (initial start) after 25 ctrol steps as so as ctrol output is below 5 % if plant/system ON/OFF input is switched to OFF out2 open Xw T Xw T // 7 ENB-31GE51 R14
Electric Heat Current Valve (pwm output) The pulse-width modulated output is suitable for driving electric heat current valves and is ctrolled from the heating signal. The interval or total cycle time is set by the ctrol parameter Runtime. The diagram below shows as example, 6% Output Signal with Motor Runtime set to 5 sec: YMode = ; Mode = 3. out1/out2 3 5 7 8 1 sec 2-stage ON/OFF Sequence Ctrol The R7426B ctrollers cvert the output signal into a twostage ON/OFF sequence output signal suitable for operating relays. Two relays can be cnected to provide sequence ctrol of e.g. two electric heater stages. Parameter setting for Output Switching Positi: YMode = ; YxMode (x = 2 or 3) = 1 Step1 Step2 Power out2 out1 25 3 65 7 1 % / 3-stage Binary ON/OFF Sequence Ctrol The R7426B ctrollers cvert the heating signal into a three-stage binary ON/OFF sequence as shown in the following diagram. Parameter setting for Output Switching Positi: YMode = ; Mode = 2 Step1 Step2 Step3 Power out2 out1 2 25 45 5 7 75 1 % 4-stage ON/OFF Electric or For YMode = 2, the output sequence of / is ctrolled from the heating signal and the output is ctrolled from the cooling signal. For YMode = 3, the output sequence of / is ctrolled from the cooling signal and the output is ctrolled from the heating signal. The output of is operated in accordance with Mode. Parameter setting: YMode = 2 or 3, Mode and Mode = 4 Step1 Step2 Step3 Step4 Power out2 out1 out2 out1 2 25 4 45 6 65 8 85 1 % / 6-stage ON/OFF Sequence Ctrol or The output sequence of // is ctrolled from e output signal, Main Temperature Ctrol or Cascade Ctrol. Parameter setting: YMode = 1, Mode, Mode, and Mode = 4 CTRF = (cooling) or 1 (heating) Step1 Step2 Step5 6 signal sequence of // out1/out2 Step6 Power 1 15 25 3 7 75 85 9 1 % // 15-stage Binary ON/OFF Electric and The output sequence of / is ctrolled from the heating signal. The output sequence of is ctrolled from the cooling signal. The output of is operated in accordance with Mode. Parameter setting: YMode=5 Step15 Power Step14 Step1 Step2 4 signal sequence of / out1/out2 4.5 11 89 95.51 % 6.5 13 91 97.5 / ENB-31GE51 R14 8
Two-Positi Damper Ctrol If the value of the ctrol parameter YMode = 4, the damper output signal operates as two-positi ctrol as follows: If the ctroller mode OFF (Comfort- Standby- or Nightmode), the output signal is set to 1%. If the ctroller mode = OFF, the output signal is set to %. The output sequence of / operates as Temperature Sequence Ctrol with and. ON/OFF Output The ON/OFF output is provided to switch fans, pumps, or other MicriK 2 ctroller without RTC. If e of the following cditis occur the ctroller switches the ON/OFF output from OFF to ON after a fixed 3-minute time delay: The ctroller mode OFF (Comfort, Standby, or Night mode). The night cycle program is active. The optimum start program is active. If e of the following cditis occur, the ctroller switches the ON/OFF output from ON to OFF: The ctroller mode = OFF. The freeze protecti input is active. The following functi will be active in flow water temperature applicatis if the cfigurati parameter Ctrltyp = Hi2: The ctroller switches the ON/OFF output from ON to OFF if the outside air temperature is above 8 C and the output signal = % for more than 5 minutes during Comfort, Standby, or Night mode. Analog Outputs R7426C, ly Three output ctrol signals are provided to ctrol valve or damper actuators or E/P transducers for pneumatic actuators. The full output range is...12 Vdc. The ctrol range is comm to all outputs and is software-cfigurable using the ctrol parameter YRange to either 2...1 Vdc or...1 Vdc. Each output can be selected for direct or reverse acting. ADJUSTMENTS Ctrol Point / Setpoint Adjustment (CPATYP) The ctrol or setpoint can be adjusted via the internal or an external potentiometer cnected to the CPA/SPA input. The CPA/SPA type is selected using the ctrol parameter CPATYP (see page 2, Technical Data). Calibrati of Temperature Sensors (T1CAL, T2CAL, and T3CAL) In case of an set as a result of lg wiring lengths, the temperature sensor inputs (T1, T2 and T3) can be adjusted separately by the ctrol parameters T1CAL, T2CAL, and T3CAL. WIRING Wiring run From ctroller to all input and output devices Type of Length max. wires 1. mm 2 1.5 mm 2 local standard 1 m 15 m Offset for temperature sensors due to wire resistance per 1 m distance from sensor to ctroller: Type of wire.5mm 2 (AWG2) 1.mm 2 (AWG17) 1.5mm 2 (AWG15) Temperature set Pt 1 BALCO 5 NTC.18 C (.324 F).9 C (.162 F).6 C (.18 F).3 C (.54 F).15 C (.27 F).1 C (.18 F) negligible 9 ENB-31GE51 R14
CONNECTIONS R7426B R7426C 2mV/%rh 24 V 15 16 17 18 19 2 21 22 23 24 25 26 27 28 open/out 2 close/out 1 open/out 2 close/out1 open/out 2 XWrh close/out1 CPA/SPA T1 T2 T3 B A 1 2 3 4 5 6 7 8 9 1 11 12 13 14 * Occupancy T1 T2 T3 Freeze prot. Serial Interface for Panel Bus 2mV/%rh 24 V 15 16 17 18 19 2 21 22 23 24 25 26 27 28 XWrh /2...1V /2...1V /2...1V CPA/SPA T1 T2 T3 B A 1 2 3 4 5 6 7 8 9 1 11 12 13 14 * Occupancy T1 T2 T3 Freeze prot. Serial Interface for Panel Bus = V = V * R7426B114,C112 R7426B212,C21 ON/OFF On/Off Output 9 1 W 33 Jumper 1) State Descripti W33 2) closed open T3 supplied by this ctroller T3 supplied from another ctroller 1) Default jumper positi = closed 2) Cut (open) jumper W33 ly if the T3 input is fed from another ctroller (parallel cnecti, max. 6 devices). This discnects the T3 input from the internal power supply. CAUTION Outputs are not isolated from power supply Observe correct phasing with ac power supply Fig. 3. Cnectis and Jumper coding ENB-31GE51 R14 1
MOUNTING AND DIMENSIONS 152 43 Heywell All dimensis in mm. 15 SEL SET 121 +/-.3 = = 198 +/-.3 17 +/-.3 = = 3.5 = 87 +/-.2 = 11 +/-.3 13 +/-.3 = approx. 45 x 35 (cut-out for cables) 4.5 (when mounting DIN rail) = 3.5 18 +/-.2 wall mounting frt panel mounting Fig. 4. Mounting and dimensis 11 ENB-31GE51 R14
HONEYWELL Automati and Ctrol Solutis Heywell GmbH Böblinger Straße 17 D-7111 Schönaich Phe: (49) 731 6371 Fax: (49) 731 637493 http://europe.hbc.heywell.com Subject to change without notice. Printed in Germany Manufacturing locati certified to ENB-31GE51 R14