Crompton Controls DCM - Manual (Page 30)

Emotron AB 01-2120-01r2 Single-Pump System Installation 29
6.1.4 Operation relay connection (PUMP & C)
Terminals 7 and 8 are the operating relay connections that control the start and
stop equipment for the pump motor.
Terminal 8 (PUMP) is an operating relay output. Terminal 7 (C) is the com-
mon input for the operating relay, see Fig. 13, page 27.
When powered off, the operating relay is NO. When powered on, NC or NO
can be selected, see Table 8, page 53 and window 52.
6.1.5 Digital input connection (DIG & SGND)
Terminals 3 (DIG) and 4 (SGND) are connections for a closing contact
between DIG and SGND.
The three functions that can be initiated by the digital input are:
1. High-level switch (to enable immediate start of the pump).
2. External reset.
3. External Auto set.
See Fig. 13, Table 8, page 53 and window 53.
6.1.6 Temperature-measuring input connection
(TEMP & SGND)
Terminals 4 and 5 are the temperature-measuring input and/or motor protec-
tion contact connections. The motor protection relay can be connected in series
with the temperature sensor. Terminal 5 (TEMP) is for a PTC-type thermistor
or thermo contact. Terminal 4 (SGND) is the signal ground for the
temperature-measuring input. See Fig. 13, Table 8 and windows 31 and 32.