Assembly
16
RS232
Connecting inputs and outputs
Correct connection of the inputs and outputs
Incorrect connections will damage the device!
Do not expose the connections to any external voltage!
Ensure that the cores in the terminals are securely in place.
A detailed description is included in section
Description of the signal
inputs and outputs
on page 32.
Terminal des-
ignation
Type
Function
Note
OUT +
OUT -
OUT Current loop 4 - 20 mA
Galvanically isolated
START
GND
IN
External start/stop of analysis
Ground
Only connect isolated
break contacts/closing
contacts!
GND
IN
Ground
RxD
TxD
IN
OUT
RS232 interface
Not galvanically iso-
lated (RxD currently not
in use)
Terminal des-
ignation
Type
Function
+ / -
Operating voltage
24 VDC
NO
Alarm output
– NO contact
floating relay output/
max. 35 VAC/60 VDC
C
Alarm output
– Root
floating relay output/
max. 35 VAC/60 VDC
NC
Alarm output
– NC contact
floating relay output/
max. 35 VAC/60 VDC
CAUTION
!
