EPC-1 Electro- Pneumatic Controller

Transcription

1 Applications Process Control Systems HVAC Systems Water Purification Systems Vaporizers Metal Cleaning Systems Plating Systems Feed Water & Fuel System Pressure Control Controls in Boiler Rooms EPC-1 Electro- Pneumatic Controller Accepts 4-20 ma Signal Accuracy to ±0.5% of Span NEMA 4 Enclosure is rugged, watertight and tamper resistant Backlit LED Display shows set point, process variable, process deviation from set point or calibrate high or low as selected by display mode switch Response Speed Adjustment sets the duration and frequency of air pulses controlling speed of response Pneumatic Output sends air to control valve up to maximum air input AC Power Input is 115/230 VAC, 50/60 Hz, switch selectable Optional Remote Control and Remote Set Point Modules can be mounted up to 1000 feet away Display Mode Switch selects set point, process variable, process deviation from set point or calibrate high or low for display Set Point Adjustment establishes process set point Dead Band Adjustment for hysteresis to balance system accuracy with valve wear Pneumatic Input uses standard plant air up to 100 psig maximum Electrical Signal Input is 4-20 ma or from RTD with optional signal conditioning card Intrinsically Safe Option Factory Mutual Approved for hazardous locations ONE BOX REPLACES I/P TRANSDUCERS, POSITIONERS AND EXTERNAL POWER SUPPLIES

2 EPC-1 ELECTRO-PNEUMATIC CONTROLLER Simplified Installation eliminates need for Positioner, I/P, External Power Supply & Instrument Quality Air No Air Consumption at Steady State Air Output 0 to Maximum Supply Pressure Loss of Power Reset Accuracy to ±0.5% of Span Easy to Read Digital Display Internal Power Supply for Transmitter EPC-1 ELECTRO-PNEUMATIC CONTROLLER Control of E8, Kombat Series K, Intimidator Type J, Boss Type D, Doctor Type MD and other manufacturer s control valves Process Control Systems HVAC Systems Packaged Systems such as Water Purification, Vaporizers, Metal Cleaning, Plating, etc. Feed Water and Fuel System Controls in Boiler Rooms Ideal for Pressure Control TSC Temperature Signal Conditioning Card (for RTD without transmitter) LCM-90 Local Control Module (where distance between valve & EPC exceeds 60") EPC-RS Remote Set Point Module Pressure Transmitter RTD Thermometer Differential Pressure Transmitter Thermowell MODELS EPC-1 Electro-Pneumatic Controller EPC-H EPC-1 for Actuators greater than 80 sq. in. EPC-IS Intrinsically Safe EPC-1 APPLICABLE CODES NEMA 4 Enclosure SPENCE EPC SIMPLIFIES YOUR CONTROL SYSTEM Conventional Pneumatic Control System Spence EPC-1 Electro-pneumatic Control System INSTRUMENT AIR PNEUMATIC CONTROLLER 2O PSIG 6O PSIG EPC PLANT AIR PNEUMATIC POSITIONER 3-15 PSIG 60 PSIG 4-20 ma PRESSURE TRANSMITTER J VALVE J VALVE

3 EPC-1 ELECTRO-PNEUMATIC CONTROLLER EPC-1 AND EPC/IS SERIES Controllers shall be electro-pneumatic, accepting an input signal of 4 to 20 ma or RTD input and providing an output of psig capable of modulating diaphragm or cylinder actuators without the use of valve positioners or I/P transducers. Controllers shall be capable of operating on 115/230 VAC, 50/60 Hz or 24 VDC supply and provided with a minimum 31 2 inch digital display indicating set point, process variable, deviation from set point and high/low calibration values. Controllers shall be capable of direct or reverse action and provided with external AUTO/MANUAL switch. Controllers shall have no steady-state air consumption and be capable of accepting a 100 psig input without the use of regulators. Accuracy shall be ±0.5% of span, gain shall be adjustable, dead band shall be adjustable 0 5% of span and controllers shall be provided with an adjustable derivative function. Enclosures shall be NEMA 1, 2, 3, 3S, 4, 4X, 12 and 13 rated and provided with a hinged cover. Controllers shall be CSA-Approved, FM-Approved for intrinsic safety. Controllers shall be Spence Engineering or approved equivalent. EPC/RCS-90 AND EPC/RCS-90/IS A control module shall be provided to be mounted at or near the valve which will enable the controller to be mounted up to 1000 feet away and linked to the module by only electrical connections. Enclosure shall be NEMA 1, 2, 3, 3S, 4, 4X, 12 and 13 rated. The local control module shall be CSA-Approved, FM-Approved for intrinsic safety. EPC/RS MODULE The remote set point module shall consist of a 1 4 DIN, NEMA 1 panel mount enclosure designed to be mounted up to 1000 feet away from the controller. Enclosure shall be provided with a clear, hinged cover equipped with a lock and two keys. Modules shall be provided with all necessary panel mount hardware and plugin terminal connector. Modules shall have a minimum 31 2 inch digit backlit LCD display with 1 2 inch high characters. Display shall indicate high-low transmitter calibration values, process values, deviation from set point and process set point. Module shall allow calibration adjustment and manual change of controller set point. Module shall be powered by 24 VDC from the controller and require no external power supply. SET POINT RAMP GENERATOR Controller shall be capable of providing automatic ramp-up and/or ramp-down to or from final process set point incrementally in 4,096 discrete steps. Ramp time shall be adjustable from a minimum of one second to a maximum or 166 hours and shall be selected via digital switches on the front panel. Timer on/off, start/pause/resume, ramp-up/ramp-down and reset functions shall be capable of remote control with a PLC or DCC interface using a zero signal (shunt to ground contact closure). A.C. Power 1/2" Conduit Pneumatic Output 1/8" NPT (Female) Vent Electrical Signal (Input/Output) 1/2" Conduit 6.25 (158) Pneumatic Input 100 psi Max. 1/8" NPT (Female).38 (9.5).312 DIA. (7.9) RATINGS Supply Voltage 115 Volts 50/60 Hz 230 Volts 50/60 Hz 24 Volts DC Operating Voltage Range 90 to 110% Power Consumption 10 Watts (max) 0.7 Watts (steady state) Input 4-20 ma Air Supply 100 psig maximum Output 0 to max supply pressure Air Consumption 0 at steady state Accuracy ±0.5% Span Response Speed Range 200:1 Amplifier Gain Normal = 6 High = 12 Dead Band Adjustable, 0 to 5% Span Input Resistance 150 Ohms Enclosure Material Noryl* Enclosure Cover Polycarbonate Pneumatic Fittings 1/8" FNPT Air Delivery 0.45 scfm at 30 psi 0.55 scfm at 60 psi 0.63 scfm at 90 psi Weight 9 lbs (4.1 kg) *Noryl is a registered trademark of General Electric.

4 EPC-1 ELECTRO-PNEUMATIC CONTROLLER EPC/IS INTRINSICALLY SAFE The Spence EPC/IS is an intrinsically safe, single loop electro-pneumatic controller when installed with barriers. It is Factory Mutual approved for: Class I, II, III Division 1, applicable Groups C, D, E, F and G Nonincendive for Class I, Division II, Groups C and D Suitable for Class II and III, Division 2, Groups F and G hazardous locations EPC/RS REMOTE SET POINT MODULE The Spence EPC/RS is a 1/4 DIN, panel mounted module in a NEMA 1 enclosure, designed to provide remote monitoring and control of the EPC-1 Series Controllers up to 1000 feet away. Included are: 31/2" digit, backlit LCD display indicating: PMC-1 low and high calibration values Process value (temperature, pressure, etc.) Process deviation from set point Process set point Mode select button and LED indicators Remote set point button Hi-Lo calibration adjustments EPC/RCS-90 & RCS-90/1S LOCAL CONTROL MODULE The Spence EPC/RCS-90 is a small enclosure housing a terminal strip and the loading/unloading solenoid valves which are normally inside the EPC-1 Series Controller. Designed to mount on the wall or directly on the control valve, the RCS-90 minimizes the air signal line length and requires only electrical connections to the EPC-1 up to 1000 feet away. Available with hi-cycle standard or FM approved (same as EPC/IS) intrinsically safe solenoid valves for applications including: Where EPC-1 air output line to the control valve exceeds 60 feet When system response speed needs to be increased Where valve location requires intrinsically safe equipment Ambient temperatures near valve exceed EPC-1 rating but are within RCS-90 s 20 to 175 F ( 29 to 79 C) temperature rating When EPC-1 is installed for remote valve operation To operate double acting cylinder actuators SET POINT RAMP GENERATOR The Spence EPC-1 Set Point Ramp Generator module is a factory mounted module which provides automatic ramp-up or ramp-down to or from final process set point. The ramp time is adjustable from one second to 166 hours. Ramp time is selected by digital switches on it s front panel which replaces the EPC-1 s lower panel. Remote controllable functions include timer on/off, start/pause/resume, ramp-up/ramp-down and reset. Applications include: Steam Distribution Systems for automatic, gradual warm-up to prevent boiler overloads, allow traps to remove high startup condensate loads and to eliminate water hammer, banging and resulting mechanical damage Food, Pharmaceutical and Process Industries in single loop process control systems

5 2 1 8 (54) (57) 3 (76) 9 (228) MODEL 65A AIR FILTER REGULATOR Converts Plant Air to Instrument Quality Delivers 0 to 50 PSIG Air Filter Regulator shall provide remote control for air actuated regulators and control valves. It shall convert plant air to instrument quality air and provide 0 to 50 psi delivery pressure. The Regulator shall have a flow capacity of 22 scfm. 3 (76) MODEL 65A AIR FILTER REGULATOR Provides Remote Control of E8, A Series Pilots, Positioners, EPC-1. To Upgrade Plant Air to Instrument Quality Air MODEL A AIR ADJUSTMENT PANEL includes an air adjusting valve incorporating its own bleed and two gages; one for the supply air, the other to indicate the adjusting air. It comes complete and ready to be mounted directly on a control board or box. MODEL B AIR ADJUSTMENT PANEL is the same as the Model A with the exception that it has, in addition, a gage indicating the delivery pressure. ELECTRO-PNEUMATIC (I/P) TRANSDUCER Converts Current Signal to Pneumatic Signal Handles up to 150 PSIG Supply Air Accommodates 4-20 ma and ma Input Signals 1 4 (6) 3 (76) 1 8 MAX. 3 4 (19) THICKNESS FOR PANEL MOUNT Electro-pneumatic Transducer shall convert 4-20 ma or ma input signals to a proportional 3-15 PSIG pneumatic output. Output capacity shall be a minimum of 17 SCFM with a 20 PSIG supply or 47 SCFM with a 120 PSIG supply. MATERIALS OF CONSTRUCTION Housing Aluminum Orifice Sapphire Nozzle Bronze PC Board Fiberglass Cover Aluminum (60) (86) (2) STANDOFFS (2) MOUNTING HOLES #10-32 UMF-2 ELECTRO-PNEUMATIC TRANSDUCER Simple way to control pneumatic valves with current signal

6 RTD RESISTANCE PROBE THERMOMETER 304 SS closed end probe measures temperature Varies electrical resistance in proportion to temperature changes Communicates change in resistance to automated systems 304 SST Thermowell The RTD shall have a 304 stainless steel closed end probe with a 1/2 inch NPT male with hex fitting process connection. The RTD shall change resistance in proportion to a change in temperature and be capable of connecting to a device (such as a signal conditioning card) which can convert that resistance change to a standard 4-20 ma signal. MATERIALS OF CONSTRUCTION Connector Head: NB 1 Cast Iron Probe: 304 SS Closed End Process Connection: 1/2" NPT Male w/hex fitting Electrical Connection: 1/2" NPT Female Sheath Length 5 1 2" or " Sheath Diameter 1 4" RTD RESISTANCE PROBE THERMOMETER Building control systems Process control systems Systems utilizing the EPC Electro- Pneumatic Controller ELECTRONIC PRESSURE TRANSMITTER Solid state, calibrated transmitter measures pressure to ±0.5% accuracy Outputs 4-20 ma signal; VDC unregulated; 100 ohms output impedance Integral metal diaphragm and polysilicon bridge are virtually unaffected by shock, vibration or mounting Available in ranges 0-30, and psig, overpressure protected NEMA 4 compliant with cable or waterproof connector Operates in F 1/8 NPT male or female process connection ELECTRONIC PRESSURE TRANSMITTER Building control systems Process control systems Systems utilizing the EPC Electro- Pneumatic Controller The Electronic Pressure Transmitter shall have a 1/8 NPT male or female 316 stainless steel process connection. The Electronic Pressure Transmitter shall measure pressure to ±0.5% accuracy and output a standard 4-20 ma signal with 100 ohms output impedance. The Electronic Pressure Transmitter shall be shock and vibration resistant, overpressure protected, operate within F and be NEMA 4 compliant. MATERIALS OF CONSTRUCTION Case: 304 SS Diaphragm: 17-4 PH SS Process Connection: 316 SS

7 ECKARDT POSITIONER Pneumatic or Electro-Pneumatic Modular Design Boost Adjustable Separate Control for Zero Point and Range of Travel Gages MODELS P6981 Pneumatic Positioner EP6986 Electro-pneumatic Positioner ECKARDT PNEUMATIC POSITIONER W/GAUGES Control of Intimidator Control Valve Split Range for Parallel Stations Fine Tune Control Where Required Air Pressure is Greater than Controller Output Where Change of Actuator Action is Desired (Reverse to Direct & vice versa) The positioner shall be SIRA and WIB approved and shall be mounted directly onto the valve. Feedback, I/P Transducer and/or Limit Switch options shall be available. RATINGS Temperature Range -40 to 176 F (-40 to 80 C) Pneumatic Connections 1/4" NPT Supply Pressure 60 psig Air Consumption 0.11 to 0.21 scfm Input Signal 3-15 psig, Split Range, 4-20mA* Hysteresis <0.3% Body Construction Aluminum APPLICABLE CODES SIRA & WIB Approved *Applies to EP6986 only ECKARDT P6981 POSITIONER ON INTIMIDATOR TYPE J CONTROL VALVE

8 PMV POSITIONER Pneumatic or Electro-Pneumatic Compact, Rugged Design Easy to Calibrate Bright, Visible Indicator Low Air Consumption Mounts Compactly on Valve Stainless Steel Cam External Zero Adjustment Modular Design PMV P4 PNEUMATIC POSITIONER Control of Intimidator, Boss and Doctor Control Valves Split Range for Parallel Stations Fine Tune Control Where Required Air Pressure is Greater than Controller Output Where Change of Actuator Action is Desired (Reverse to Direct & vice versa) RATINGS Temperature Range -4 to 185 F (-20 to 85 C) Supply Pressure 60 psig Air Consumption 0.31 scfm (P4) 0.71 scfm (P5) 0.78 scfm (EP5) Input Signal 3-15 psig, Split Range 4-20 ma Linearity ±0.7% (P4) <0.5% (P5 & EP5) Hysteresis.0.8% (P4) <0.75% (P5) <0.5% (EP5) Body Construction Aluminum Mechanical Limit Switch Proximity Limit Switch 4-20 ma Position Transmitter Feedback Potentiometer 1K Feedback Gauges MODELS P4 Pneumatic Positioner P5 Pneumatic Positioner w/gauges EP5 Electro-pneumatic Positioner w/gauges The Positioner shall be modular and cam characterized with FM, CSA and CENELEC certifications and shall be mounted directly onto the valve. Feedback, I/P Transducer and/or Limit Switch options shall be available. APPLICABLE CODES CENELEC, FM & CSA approved PMV P4 POSITIONER ON INTIMIDATOR TYPE J CONTROL VALVE

9 MOORE POSITIONER Pneumatic or Electro-Pneumatic Modular Design Cam Characterized for Added Turndown Gauges Included Proportional Control Easy to Calibrate Non-Interacting Zero and Span Mounts compactly on Valve Provides Precise Control Mechanical Limit Switch Proximity Limit Switch 4-20 ma Position Transmitter Feedback Potentiometer 1K Feedback MODELS 760P Pneumatic Positioner 760EP Electro-pneumatic Positioner w/integral I/P Transducer The Positioner shall be modular and cam characterized with NEMA 4X, FM, CSA, CENELEC and Sirs certifications and shall be mounted directly onto the valve. Feedback, I/P Transducer and/or Limit Switch options shall be available. The Positioner shall include gages,have non-interacting zero and span and consume 0.5 to 0.6 scfm. MOORE 760P PNEUMATIC POSITIONER Control of Intimidator, Boss & Doctor Control Valves Split Range for Parallel Stations Fine Tune Control Where Required Air Pressure is Greater than Controller Output Where Change of Actuator Action is Desired (Reverse to Direct & vice versa) RATINGS Temperature Range -40 to 185 F (-40 to 85 C) Pneumatic Connections 1/4" NPT Gauge Connections 1/8' NPT Electrical Connections 3/4" NPT Exhaust Connections 1/4" NPT Action Direct or Reverse Supply Pressure 60 psig Air Consumption, Typical 0.5 scfm Input Signal 3-15 psig, Split Range, 4-20 ma* Span Adjustable, -60% to +25% of normal Zero Adjustable, -10% to +60% of normal Linearity, Typical 0.5% of normal span 0.75% of normal span* Hysteresis, Typical 0.75% of normal span 1.0% of normal span* Deadband <0.25% of span APPLICABLE CODES NEMA 4X, IP 65 FM, CSA, CENELEC, Sira Approved MOORE 760P POSITIONER ON INTIMIDATOR TYPE J CONTROL VALVE *Applies to 760EP only