CT-AHD ABB, CT-AHD Datasheet
CT-AHD
Manufacturer Part Number
CT-AHD
Description
TIMER, OFF-DELAY, 7 RANGES
Manufacturer
ABB
Datasheet
1.CT-AHD.pdf
(2 pages)
Specifications of CT-AHD
Contact Configuration
SPCO
Nom Input Voltage
240VAC
Delay Time Range
0.05s To 100h
Adjustment Type
Screwdriver Slot
Relay Mounting
DIN Rail
Svhc
No SVHC (18-Jun-2010)
Coil Voltage Vac Nom
250V
Contact Current Ac Max
6A
5.86
See accessory pages for
specifications.
Approvals:
Accessories
17.5 mm Wide, 35 mm DIN
Rail Mounting
Universal Voltage
24 ... 240 V AC; 24...48 V DC
7 Time Ranges From 0.05s ...
100 h
Repeat Accuracy ≤ ± 0.5%
6 A Isolated SPDT Relay
Output
2 LED’s Indicate Status
Delay On Break (OFF Delay)
CT-AHD Timer
Relay Output
Operation
Delay On Break (OFF-delay with auxiliary voltage):
Supply voltage must be applied before and during
timing; the green LED glows. Upon closure of the initiate
switch S1, the output relay energizes and the red LED
glows. The time delay begins when S1 is opened. The
output remains energized during timing and the green
LED flashes. At the end of the time delay, the output
de-energizes and the red LED is OFF. The output will
energize if S1 is closed when supply voltage is applied.
Reset: Re-closing S1 during timing resets the time
delay. Removing supply voltage resets the time delay
and the output relay.
Connection
Ordering Table
Wiring Diagrams
Voltage Removed
Relay Energized
NOTE: An optional untimed parallel load can be
connected to A1 or Y1 as shown.
Voltage Applied
LED Operation
24 ... 240 V AC
24...48 V DC
Supply Voltage Time Ranges
Timing
0.05 ...
0.5 ... 10 s
5.0 ... 100 s
0.5 ... 10 m
5.0 ...100 m
0.5 ... 10 h
5.0 ... 100 h
Green LED
Flashing
OFF
ON
ON
1 s
1SVR 500 110 R 0000
Red LED
Part Number
OFF
N/A
ON
ON
Function
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CT-AHD Summary of contents
Page 1
... Delay On Break (OFF Delay) CT-AHD Timer Relay Output Operation Delay On Break (OFF-delay with auxiliary voltage): Supply voltage must be applied before and during timing; the green LED glows. Upon closure of the initiate switch S1, the output relay energizes and the red LED glows. The time delay begins when S1 is opened. The output remains energized during timing and the green LED fl ...
Page 2
... Delay On Break (OFF Delay) CT-AHD Timer Relay Output Technical Data Input Voltage/Power Consumption A1-A2 Tolerance Frequency Initiate Time Time Delay Range Reset Time Repeat Accuracy Time Delay vs Input Voltage Tolerance Time Delay vs Temperature Status Display Supply Voltage Output Relay Energized Output ...