Figure 9 Connection Examples For Alarm Outputs - M&C CSS Series Instruction Manual

Notice
On X2 connector pin 10-12, external switches can be connected for controlling the sample gas pumps
(internal or external).
On X2 connector pin 7+8, an indicator can be connected that warning messages are present (yellow
LED lights up on the front of the TCU).
On X2 connector pin 7+9, an indicator can be connected that alarm messages are present (red LED
lights up on the front of TCU).
On X2 connector pin 1+6, an indicator can be connected that a cooler temperature alarm is present
(excess or low temperature alarm).
On connector X2 pin 1+2, 1+3, 1+4, 1+5, an indicator can be connected that excess or low temperature
alarms of the optional temperature controller module are present.
On connector X2.1 pin 3+8, 3+9, 3+10, 3+11 respectively, an indicator can be connected that flow alarm
messages are present. Since this is a warning message, the yellow LED on the front of the TCU lights
up.
On X2.1 connector pin 3+4, 3+5, 3+6, 3+7 respectively, an indicator can be connected that liquid alarm
messages are present. Since this is an alarm message, the red LED on the front of the TCU lights up.
On connector X2.1 pin 1+2, an indicator of cooler temperature can be connected (standard 4-20 mA.
0-20 mA if ordered).
Notice
Figure 9 Connection examples for alarm outputs
24
For the alarm relays „safety first" is valid, i.e. contacts are open currentless
and in case of alarm.
For external pump control potential free contacts have to be used!
Switch open => pump off
Switch closed => pump on
Route the indicator lines separately from the power supply lines.
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