
Wiring connections
Dimensions (mm)
SR2C
Two channel emergency stop with cross short-circuit
monitoring and shorting to ground detection
To activate the cross-circuit monitoring T11 and T14 must be
connected. The emergency stop button will be looped in lines
T11-T12 and T10-T13, ON and RESET will be connected
between T12 and T21. To activate the detection of shorting to
ground T10 needs to be connected with PE. After connecting
the power supply to A1 and A2 the safety contacts can be
actuated via the ON button.
One channel emergency stop
In accordance with EN954-1, the SR2C can be used as an
emergency stop relay with a single-channel push button. For
this purpose T10 and T13 as well as T12 and T14 need to be
connected. The one channel emergency stop button is looped in
line between T11-T12/T14. Ground short detection is available
in this application if T10 is connected with PE.
Two channel safety guard monitoring with cross short
circuit and ground monitoring
This application conforms to the two channel emergency stop
standard, however the emergency stop button is replaced by
two limit switches, which monitor the guard door. At least one
of the limit switches should be positive force opening (see IMO
Safety Limit Switches).
Emergency stop
Emergency stop
On
A1
only 24V
only 24V
only 24V
only 24V
only 24V
only 24V
T11
T21
T12
T13
13
23
14
mRelay control and error
Relay control and error
monitoring incl. aux relay K1
K1
K2
T14
24
A2
T10
Safety guard closed
On
A1
T11
T21
T12
T13
13
23
14
24
K1
T14
K2
A2
T10
22.5
114
9
On
A1
T11
T21
T12
T13
13
23
T10
mRelay control and error
K1
K2
T14
14
24
A2