Pin Allocation Of The 20Ma/Cs Interface (Passive) - Baer DLX User Manual

8.3.6

Pin allocation of the 20mA/CS interface (passive)

With a passive 20mA/CS interface module (CL0, current loop) the unit can
be used in a 20mA system, as described in the standard IEC62056-21
(IEC61107).
•
Max. voltage:
•
Max. current:
•
Baud rate:
•
Communication protocol:
Pin allocation at housing for panel mounting (Com2/X5 or Com1/X6)
and at 19"-rack (only Com2/X7):
Function
– 20mA passive, RTX –
+ 20mA passive, RTX +
—
—
—
Baud rate: 300 to 9600 Baud
Pin allocation at 19"-rack (only Com1/X6):
Function
—
+ 20mA passive, RTX +
– 20mA passive, RTX –
—
—
Baud rate: 300 to 9600 Baud
Note: No galvanic isolation at the 20mA/CS interface to protection earth!
82
30VDC (open-circuit)
30mA
300 to 9600 Baud (fix baud rate)
SCTM or IEC 60870-5-102
(alternatively Modbus RTU)
DLX (5 pins, male)
Pin No.
1
2
3
4
5
DLX (5 pins, male)
Pin No.
1
2
3
4
5