Page 56 - EPR Catalog 2015

CT-S range
Function diagrams

CB Impulse-OFF with auxiliary voltage CE Impulse-ON and impulse-OFF
(Interval and trailing edge interval)
1 (Trailing edge interval) CT-MXS

CT-MVS This function requires continuous control supply voltage for

This function requires continuous control supply voltage for timing. If control supply voltage is applied, closing control
timing.
If control supply voltage is applied, opening control input A1- input A1-Y1/B1 energizes the output relay immediately and
Y1/B1 energizes the output relay immediately and starts tim-
ing. The green LED flashes during timing. When the selected starts the pulse time t1. The green LED flashes during timing.
pulse time is complete, the output relay de-energizes and the When t1 is complete, the output relay de-energizes and the
flashing green LED turns steady. flashing green LED turns steady. Re-opening control input
Closing control input A1-Y1/B1, before the pulse time is com-
plete, de-energizes the output relay and resets the pulse time. A1-Y1/B1 energizes the output relay immediately and starts
If control supply voltage is interrupted, the output relay de-
energizes and the time delay is reset. the pulse time t2. The green LED flashes during timing. When

t2 is complete, the output relay de-energizes and the flashing
green LED turns steady. t1 and t2 are independently adjust-
able. If control input A1-Y1/B1 changes state before the pulse

time is complete, the output relay de-energizes and the pulse

A1-A2 2CDC 252 027 F0206 time is reset. If control input A1-Y1/B1 changes state again,
A1-Y1/B1
15-18, 25-28 the interrupted pulse time restarts. If control supply voltage is
15-16, 25-26
interrupted, the output relay de-energizes and the time delay
21-24
21-22 is reset. 2CDC 252 028 F0206
green LED A1-A2

t <t A1-Y1/B1

t = adjusted pulse time 15-18, 25-28
15-16, 25-26

green LED

t1 t2 < t1

t1 = adjusted pulse time 1
t2 = adjusted pulse time 2

DA Flasher, starting with the ON time DB Flasher, starting with the OFF time

(Recycling equal times, ON first) (Recycling equal times, OFF first)

CT-WBS CT-WBS

Applying control supply voltage starts timing with symmetrical Applying control supply voltage starts timing with symmetri-
ON & OFF times. The cycle starts with an ON time first. The cal ON & OFF times. The cycle starts with an OFF time first.
ON & OFF times are displayed by the flashing green LED, The ON & OFF times are displayed by the flashing green
which flashes twice as fast during the OFF time. LED, which flashes twice as fast during the OFF time.
If control supply voltage is interrupted, the output relay de- If control supply voltage is interrupted, the output relay de-
energizes and the time delay is reset. energizes and the time delay is reset.

A1-A2 2CDC 252 029 F0206 A1-A2 2CDC 252 030 F0206
15-18, 25-28 15-18, 25-28
15-16, 25-26 15-16, 25-26

green LED green LED

tt tt

t = adjusted flashing time t = adjusted flashing time

DA Flasher with reset, starting with the ON time DB Flasher with reset, starting with the OFF time
(Recycling equal times with reset, ON first) (Recycling equal times with reset, OFF first)
CT-MFS, CT-MBS CT-MFS, CT-MBS

Applying control supply voltage starts timing with symmetrical Applying control supply voltage starts timing with symmetri-
cal ON & OFF times. The cycle starts with an OFF time first.
ON & OFF times. The cycle starts with an ON time first. The The ON & OFF times are displayed by the flashing green LED,
which flashes twice as fast during the OFF time.
ON & OFF times are displayed by the flashing green LED, The time delay can be reset by closing control input Y1-Z2.
Opening control input Y1-Z2 starts the timer pulsing again
which flashes twice as fast during the OFF time. with symmetrical ON & OFF times.
If control supply voltage is interrupted, the output relay de-
The time delay can be reset by closing control input Y1-Z2. energizes and the time delay is reset.

Opening control input Y1-Z2 starts the timer pulsing again

with symmetrical ON & OFF times.

If control supply voltage is interrupted, the output relay de-

energizes and the time delay is reset.

A1-A2 2CDC 252 031 F0206

Y1-Z2 A1-A2 2CDC 252 032 F0206

15-18, 25-28 Y1-Z2
15-16, 25-26 15-18, 25-28
15-16, 25-26
21-24
21-22 21-24
21-22
green LED green LED

tt tt tt

tt

t = adjusted flashing time

t = adjusted flashing time

1/45 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210