Data sheet
Electronic timer CT-APS.12
OFF-delayed with 1 c/o (SPDT) contact
The CT-APS.12 is an electronic timer from the
CT-S range with OFF-delay and 10 time ranges.
All electronic timers from the CT-S range are
available with two different terminal versions. You
can choose between the proven screw connection
technology (double-chamber cage connection
terminals) and the completely tool-free Easy
Connect Technology (Push-in terminals).
2CDC 251 037 V0011
Characteristics
– Rated control supply voltage 24-48 V DC, 24-240 V AC
– OFF-delay timer with auxiliary voltage
– 10 time ranges (0.05 s - 300 h)
– Control input with voltage-related triggering to start timing
– Precise adjustment by front-face operating elements
– Screw connection technology or
Easy Connect Technology available
– Housing material for highest fire protection classification
UL 94 V-0
– Tool-free mounting on DIN rail as well as demounting
– 1 c/o (SPDT) contact
– Width of 22.5 mm
– 2 LEDs for status indication
Order Data
Electronic Timers
Type
CT-APS.12P
CT-APS.12S
Rated control supply voltage
24-48 V DC, 24-240 V AC
24-48 V DC, 24-240 V AC
Connection technology
Push-in terminals
Screw type terminals
Approvals
A
C
D
K
E
UL 508, CAN/CSA C22.2 No.14
GL
GOST
CB scheme
CCC
Kennzeichnungen
a
b
CE
C-Tick
Time ranges
0.05 s - 300 h
0.05 s - 300 h
Order code
1SVR 740 180 R3100
1SVR 730 180 R3100
Accessories
Type
ADP.01
MAR.01
COV.11
Description
Adapter for screw mounting
Marker label
Sealable transparent cover
Order code
1SVR 430 029 R0100
1SVR 366 017 R0100
1SVR 730 005 R0100
Connection technology
Maintenance free Easy Connect Technology with
Push-in terminals
Type designation CT-xxS.yyP
Approved screw connection technology with
double-chamber cage connection terminals
Type designation CT-xxS.yyS
2CDC 253 026 F0011
Push-in terminals
–
Tool-free connection of rigid and flexible wires with
wire end ferrule according to DIN 46228-1-A,
DIN 46228-4-E
Wire size: 2 x 0.5-1.5 mm², (2 x 20 - 16 AWG)
Easy connection of flexible wires without wire end
ferrule by opening the terminals
No retightening necessary
One operation lever for opening both connection
terminals
For triggering the lever and disconnecting of wires
you can use the same tool (Screwdriver according to
DIN ISO 2380-1 Form A 0.8 x 4 mm (0.0315 x 0.157
in), DIN ISO 8764-1 PZ1 ø 4.5 mm (0.177 in))
Constant spring force on
terminal point
independent
of the applied wire type, wire size or ambient
conditions (e. g. vibrations or temperature changes)
Opening for testing the electrical contacting
Gas-tight
2CDC 253 025 F0011
Double-chamber cage connection terminals
–
Terminal spaces for different wire sizes:
fine-strand with/without wire end ferrule:
1 x 0.5-2.5 mm² (2 x 20 - 14 AWG),
2 x 0.5-1.5 mm² (2 x 20 - 16 AWG)
rigid:
1 x 0.5-4 mm² (1 x 20 - 12 AWG),
2 x 0.5-2.5 mm² (2 x 20 - 14 AWG)
One screw for opening and closing of both cages
Pozidrive screws for pan- or crosshead screwdrivers
according to DIN ISO 2380-1 Form A 0.8 x 4 mm
(0.0315 x 0.157 in), DIN ISO 8764-1 PZ1 ø 4.5 mm
(0.177 in)
–
–
–
–
–
–
–
–
–
Both the Easy Connect Technology with Push-in terminals and screw connection technology with double-chamber cage
connection terminals have the same connection geometry as well as terminal position.
2 - Electronic timer CT-APS.12
| Data sheet
Functions
Operating controls
Rotary switch for the preselection of the time range
Fine adjustment of the time delay
3
Indication of operational states
U: green LED - control supply voltage / timing
R: yellow LED - status of output relay
4
Marker label
1
2CDC 251 037 V0011
3
2
4
Application
The CT-S range timers are designed for use in industrial applications. They operate over an 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
The CT-APS.12 with 1 c/o contact offers 10 time ranges, from 0.05 s to 300 h, for the adjustment of the time delay. The
time delay range is rotary switch selectable. The fine adjustment of the time delay is made via an internal potentiometer,
with a direct reading scale, on the front of the unit.
Timing is displayed by a flashing green LED labelled U/T.
Data sheet |
Electronic timer CT-APS.12 - 3
Function diagram
OFF-delay with auxiliary voltage
This function requires continuous control supply voltage for timing.
If control input A1-Y1/B1 is closed, the output relay energizes immediately. If control input A1-Y1/B1 is opened, the time
delay starts. The green LED flashes during timing. When the selected time delay is complete, the output relay de-energizes
and the flashing green LED turns steady.
If control input A1-Y1/B1 recloses before the time delay is complete, the time delay is reset and the output relay does not
change state. Timing starts again when control input A1-Y1/B1 re-opens.
If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset.
A1-A2
A1-Y1/B1
15-18
15-16
t
t = adjusted time delay
<t
2CDC 252 014 F0207
green LED
Electrical connection
A1
Y1/
B1 A1
15
Y1/B1
15
15-16/18
A1-A2
A1-Y1/B1
c/o (SPDT) contact
Rated control supply voltage U
S
24-48 V DC or 24-240 V AC
Control input
A2
18
16
16 18
A2
Connection diagram
Wiring instructions
Control input (voltage-related triggering)
The control input Y1/B1 is triggered with electric potential against A2. It is possible to use the control supply voltage from
terminal A1 or any other voltage within the rated control supply voltage range.
L(+)
2CDC 252 012 F0b06
L(+)
L(+)
A1
Y1/B1
A1
Y1/B1
2CDC 252 102 F0b06
A2
A2
N(-)
N(-)
L(-)
4 - Electronic timer CT-APS.12
| Data sheet
2CDC 252 103 F0b06
Technical Data
Data at T
a
= 25 °C and rated values, unless otherwise indicated
Input circuits
Supply circuit
Rated control supply voltage U
S
Rated control supply voltage U
S
tolerance
Rated frequency
Frequency range
Typical current / power consumption
24-48 V DC
24-240 V AC
Power failure buffering time
24 V DC
230 V AC
Control circuit
Control input, control function
Kind of triggering
Restistance to reverse polarity
Polarized
Capable for switching a parallel load
Maximum cable length to the control inputs
Minimum control pulse length
Control voltage potential
Current consumption of the control input
24 V DC
230 V AC
Timing circuit
Kind of timer
Time ranges 0.05 s - 300 h
Recovery time
Repeat accuracy (constant parameters)
Accuracy within the rated control supply voltage tolerance
Accuracy within the temperature range
Single-function timer
OFF-delay with auxiliary voltage
0.05-1 s, 0.15-3 s, 0.5-10 s, 1.5-30 s, 5-100 s,
15-300 s, 1.5-30 min, 15-300 min, 1.5-30 h, 15-300 h
< 80 ms
Δt
<± 0.2 %
Δt
< 0.004 %/V
Δt
< 0.03 %/°C
A1-Y1/B1
start timing external
voltage-related triggering
yes
no
yes
50 m - 100 pF/m
20 ms
see rated control supply voltage U
S
1.2 mA
8 mA
24-48 V DC
24-240 V AC
DC
AC
AC
A1‑A2
24-48 V DC, 24-240 V AC
-15...+10 %
-15...+10 %
n/a
50/60 Hz
47-63 Hz
24 V DC
12 mA /
on request
-/-
min. 15 ms
min. 20 ms
230 V AC
-/-
50 mA /
on request
115 V AC
-/-
33 mA /
on request
User interface
Indication of operational states
Control supply voltage / timing
Relay status
U/T: green LED
U/T: green LED
R: yellow LED
V:
control supply voltage applied
W:
timing
V:
output relay energized
Data sheet |
Electronic timer CT-APS.12 - 5
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