Endress+Hauser Topcal S CPC310, Operating Instructions Manual

Page: 35 / 176

Wiring
35
4.1.9 Mycom relays
In Mycom S CPM153, one fault-signaling contact and five additional contacts are available.
You can use the additional contacts to control controllers, limit contactors and the supply of
Chemoclean water and Chemoclean cleaner. The additional contacts are configured by means of
the "Set up 1 > Relays" menu.
a0003969
Fig. 39: Relay connection
Connect the relays as follows:
Please note the following with regard to assigning functions to the relays:
• The assignment of the functions to the relay in question can principally be freely configured.
When using the NAMUR assignment, however, the functions for the alarm relay and the first two
relays are specified (see NAMUR assignment below).
• The normally closed/normally open type of contact can be changed using the software.
• You can assign up to three relays to the controller.
NAMUR assignment
When using the NAMUR assignment (based on the recommendations of the interest group for
process control technology in the chemical and pharmaceutical industry), the functions are specified
for the relays as follows:
4147 5751
42 48 5852
54 44
5545
- + -
+
Contact function Mycom S connection
Alarm Terminals 41 and 42
Relay 1 Terminals 47 and 48
Relay 2 Terminals 57 and 58
Relay3 Terminals 51 and 52
Relay 4 Terminals 54 and 55
Relay 5 Terminals 44 and 45
Relay NAMUR assignment ON Terminal
ALARM Failure
RELAY 1 Maintenance required
RELAY 2 Function check
41
42
47
48
57
58