Crompton Controls DCM User Manual
Page 40
Emotron AB 01-2120-01r2
Dual-Pump System Installation
39
7. In window 24 on both DCMs, set the required stop delay between 1-90 sec-
onds. Stop delay time is the time between the pump starting to snore and
the time when the pump motor stops.
8. In window 31 on both DCMs, if the pump has temperature sensor and/or
motor protection, set temperature monitoring to (on). If not, set the win-
dow to (OFF). See Section 8.5, page 42.
9. In window 32 on both DCMs if window 31 is set to on. Temperature alarm
latched (on). Temperature alarm not latched (OFF). See Section 8.5.
10. In window 41 on both DCMs, set the permitted phase asymmetry to
between 5% and 50%. Phase asymmetry is turned off by pressing -, when
the window shows 5%. To turn the monitoring on again, press + and select a
value. See Section 8.2, page 41.
11. In window 42 on both DCMs if window 41 value is between 5 and 50%
choose phase asymmetry alarm latched (on) or phase asymmetry alarm not
latched (OFF) See Section 8.2.
12. In window 51 on the SLAVE DCM, set the alarm relay contact function to
NO (normally open) or NC (normally closed), see Section 7.1.3, page 37.
13. In window 52 on both DCMs, set the operating relay contact function. See
14. In window 53 on both DCMs, set the required function for the digital input
(DIG), value (1) high-level switch, (2) external reset, see Section 7.1.4, page
37.
15. Connect the start and stop equipment to terminal 8, see Fig. 16, page 36.
16. Check that one of the pumps is running according to the setting in window
13 and that the other pump is not running (set the stop level in window 11
to 0 (default) if the pump stops before or during the Auto set). Press the
button for 3 seconds until “SEt” is shown in the window. Press the
but-
ton on the other DCM. Wait until the start delay has elapsed. Press the
button for 3 seconds until “SEt” is shown in the window. The stop level
becomes measured power (window 04) minus snore margin (window 12) if
window 13 is set to (¯). The stop level becomes measured power (window
04) plus snore margin (window 12) if window 13 is set to (_). See Fig. 1, 2
and 12.
SET
AUTO
SET
AUTO
SET
AUTO
SET
AUTO