Characteristics Single-function OFF-delay timer for DC contactors, without auxiliary voltage Width.5 mm CDC 5 6 F3 Approvals A culus E CCC CT-VBS a Circuit diagram b Marker label Marks a CE b C-Tick Order data Type Rated control supply voltage Order code CT-VBS.7-7 V DC SVR 43 6 R6 CT-VBS.8-4 V DC SVR 43 6 R5 Order data (Accessories) Type Description Width in mm Order code ADP. Adapter for screw mounting.5 SVR 43 9 R COV. Sealable transparent cover.5 SVR 43 5 R MAR. Marker label.5 SVR 366 7 R Application The CT-S range timers are designed for use in industrial applications. They operate over a universal range of supply voltages and a large time delay range, within compact dimensions. The easy-to-set front-face potentiometers, with direct reading scales, provide accurate time delay adjustment. Operating mode For the CT-VBS version with a -4 V AC supply voltage, the time delay is selected by connecting terminal 3 to 4. When jumpered, the time delay is from to s. If terminals 3-4 are not jumpered, the time delay is from to 4 ms. The exact time delays can be seen in the delay time diagrams.
Function diagrams B OFF-delay without auxiliary voltage (True delay on break) The DC contactor connected to the output is energized when control supply voltage is applied to terminals A-A. If control supply voltage is disconnected, the DC contactor remains energized for a short time delay. This delay time depends on the coil drop out voltage and on the wattage of the contactor coil. A-A +/- 3-4 ) +/- ) t t CDC 5 38 F5 t = OFF-delay (without jumper between terminal 3 and 4) ) t = OFF-delay (with jumper between terminal 3 and 4) ) ) only for version -4 V AC Delay time diagrams Contactor coil drop-out voltage [V] 8 6 4 8 3 W 6 7 W 4 9 W 3 4 t [ms] CDC 5 7 F5 8 6 4 8 3 W 6 7 W 4 9 W t [s] Delay time guideline values Delay time guideline values -4 V AC version without jumper 3/4-4 V AC version with jumper 3/4 Contactor coil drop-out voltage [V] CDC 5 8 F5 Contactor coil drop-out voltage [V] 8 6 4 9 W 7 W 3 W t [s] Delay time guideline values -7 V AC version CDC 5 9 F5
Connection diagrams B CT-VBS.8 A 3 4 + A 3 4 A - CDC 5 8 F5 + - A SVR 43 6 R5 A-A Supply: -4 V DC + - - Contactor coil 3-4 Jumper for setting the time delay B CT-VBS.7 A + A A - CDC 5 7 F5 + - A SVR 43 6 R6 A-A Supply: -7 V DC + - - Contactor coil 3
Technical Data Input circuits Supply voltage A-A -4 V DC A-A -7 V DC Power consumption -7 V DC max. ma -4 V DC max. 7 ma Supply voltage tolerance -5...+ % Supply voltage frequency AC/DC Version DC or 5/6 Hz AC Version 5/6 Hz Duty time % Timing circuit Time range see delay time diagrams Recovery time < 5 ms Repeat accuracy (constant parameters) ± 5 % Timing error within the supply voltage tolerance range ± % Timing error within operating temperature range. % / C Output circuits + - - Contact material AgCdO Related voltage acc. to VDE, IEC 6947- see delay time diagrams Maximum switching voltage 5 V AC, 5 V DC Rated switching current acc. to IEC 6947-5- AC- (resistive) 3 V 4 A AC-5 (inductive) 3 V 3 A DC- (resistive) 4 V 4 A DC-5 (inductive) 4 V A Maximum lifetime mechanical 3 x 6 switching cycles electrical (AC-, 3 V, 4 A). x 6 switching cycles Short circuit proof, max. fuse rating n/c A fast, operating class gl n/o A fast, operating class gl General data Enclosure width.5 mm length 78. mm depth. mm Wire size fine-strand with wire end ferrule x.75 -.5 mm (8-4 AWG) fine-strand without wire end ferrule rigid x.5-4 mm (- AWG) Weight approx. 5 g (5.3 oz) Mounting position any Degree of protection enclosure / terminals IP5 / IP Temperature range operating -...+6 C storage -4...+85 C Mounting DIN rail (IEC/EN 675) Standards Product standard IEC 68-, EN 68- EMC Directive 4/8/EC Electromagnetic compatibility IEC 6-6-, EN 6-6-4 electrostatic discharge IEC/EN 6-4- level 3 6 kv / 8 kv radiated, radio-frequency, electromagnetic field IEC/EN 6-4-3 level 3 V/m electrical fast transient / burst IEC/EN 6-4-4 level 3 kv / 5 khz Surge IEC/EN 6-4-5 level 4 kv L-L conducted disturbances, induced by radio-frequency fields IEC/EN 6-4-6 level 3 V Low Voltage Directive 6/95/EG Operational reliability acc. to IEC 68--6 4 g Mechanical resistance acc. to IEC 68--6 6 g Isolation data Rated insulation voltage between supply circuit, acc. to VDE, IEC 6947- supply up to 4 V: 3 V control circuit and output circuit supply up to 44 V: 5 V Rated impulse withstand voltage between all isolated circuits acc. to VDE, IEC 664 4 kv /.-5 µs Test voltage between all isolated circuits.5 kv, 5 Hz, min. Pollution category acc. to VDE, IEC 664, IEC 55-5 III/C Overvoltage category acc. to VDE, IEC 664, IEC 55-5 III/C Environmental testing acc. to IEC 68--3 4 h cycle time, 55 C, 93 % rel., 96 h 4
Load limit curves AC load (resistive) AC voltage [V] resistive load CDC 5 49 F6 AC current [A] DC load (resistive) DC voltage [V] resistive load CDC 5 5 F6 DC current [A] Derating factor F for inductive AC load Derating factor F..9.8.7 CDC 5 4 F6.6.5...3.4.5.6.7.8.9. cos ϕ Contact lifetime /switching cycles N Switching cycles 5 V resistive load CDC 5 48 F6 Switching current [A] V 5 Hz AC 36 cycles/h 5
Dimensional drawings Dimensions in mm 9,5 4.3,5.886 4. 78 3.7 CDC 5 88 F5 3.94 Dimensional drawings (Accessories) 6.5.56 6.5.46.5.394.453.787 6.36 7.756 ADP. - Adapter for screw mounting on panel.7,5.886 7.75 3,5.38 CDC 5 85 F5 68,5 front-to-back size 7 COV. - Sealable transparent cover 3A.787 8.35 CDC 5 86 F5 MAR. - Marker label Further documentation Document titel Document type Document number Electronic Products and Relays Technical catalogue CDC 4 Cx You can find the documentation on the internet at www.abb.com/lowvoltage R Control Products R Electronic Relays and Controls 6
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