TC MGUARD RS4000/RS2000 3G
105656_en_05 PHOENIX CONTACT 61
3.3.3 Connecting service contacts
The TC MGUARD RS4000/RS2000 3G has three digital inputs and outputs. These are con-
figured in the web interface, e.g., the starting and stopping of VPN, sending alarms via SMS
etc..
The digital inputs and outputs are connected as follows.
Figure 3-4 Service contacts
A push button or an on/off switch (e.g., key switch) can be connected between service
contacts US and I.
The service contacts O1–O3 are non-floating, continuously short-circuit-proof and supply
a maximum of 250 mA.
The switching inputs and switching outputs can be connected with signals from external de-
vices, e.g., with PLC signals. In this case, ensure the same potential as well as voltage and
current specifications are defined.
Depending on the firmware version used, the service contacts can be used for various
switching or signaling tasks.
NOTE: Do not connect the voltage and ground outputs to an external source.
The plug-in screw terminal blocks of the service contacts may be removed or inserted
during operation of the device.
Control switch CMD Signal output (digital) ACK
X1 ... X3
US I1, I2, I3 GND O1, O2, O3
Voltage output (+)
Supply voltage
Switching input
11 ... 36 V DC
Ground output (-)
Supply voltage
Short-circuit-proof
switch output,
maximum 250 mA
at 11 ... 36 V DC
Example Example
US I2 GND O2
X2
US I3 GND O3
X3
US I1 GND O1
X1
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