Instructions for Use
ComPass B 4023841-001
G
Important note for the connection of the external input (see Table 2)
For activation of the functions use potential-free contacts, e. g. coupling relays or tra-
•
cers.
Use separate potential-free contacts for each indication device.
•
If the functions of several devices shall be operated in parallel, the triggering disconnec-
•
ting elements (relay outputs, coupling relays etc.) are to be operated in parallel.
Operational earth or other "GND" potentials are inappropriate as common reference po
-
•
tential.
Use a momentary contact for triggering (momentary time 1-5s), but not a permanent
•
contact.
MV interface
Terminal No.
Designation
Assignment
Direction
1
Earth
Input/Output
2
U1
Voltage/Phase 1
Input
3
U2
Voltage/Phase 2
Input
4
U3
Voltage/Phase 3
Input
Terminal assignment of MV interface
Table 3:
RS485/MODBUS interface
Terminal No.
Designation
Assignment
Direction
1
COM
Common
Input/Output
2
RES
Reserved
Reserve
3
RES
Reserved
Reserve
4
RES
Reserved
Reserve
5
B
D1/RS485 "B"
Input
6
A
D0/RS485 "A"
Input
Terminal assignment of RS485/MODBUS interface
Table 4:
Device configuration and commissioning
5.
Device configuration
5.1.
ComPass B is delivered with a standard factory setting (see Appendix A) which, in most cases,
meets all requirements. Some parameters (see Table 5) however need to be set and checked indi-
vidually which can be carried out either via the front panel control or the RS485/MODBUS interface.
G
Any alteration in the configuration should be carried out while assuring that the ComPass B is
supplied by an external supply, otherwise parameter storage may fail.
15
Dipl.-Ing. H. Horstmann GmbH
