External Forced Control - Grundfos UPE Series 2000 Montage- Und Betriebsanleitung

6.7.3 External fault signals
The expansion modules, type MC xx, have an output
from a potential-free changeover relay via terminals
2 and 3.
Functions of signal outputs:
Internal
Indicator Lights
relay
Contact
Fault Opera- position
tion of termi-
(red) (green) nals
1, 2 and 3
Off Off
1
NC NO C
Perma-
Off nently
1
on
NC NO C
Flash-
Off
ing
1
NC NO C
Perma-
nently Off
1 2
on
NC NO C
Perma- Perma-
nently nently
1 2
on on
NC NO C
Perma-
Flash-
nently
ing
1 2
on
NC NO C
The fault signal output is activated when the pump
registers a fault. The fault signal relay is activated to-
gether with the red indicator light on the pump.
Resetting of fault indications:
A fault indication can be reset in one of the following
ways:
• Briefly press "+" or "–" on the pump. This will not
influence the pump performance set.
• Briefly switch off the electricity supply to the
pump.
• By means of the R100, see section 7.4 R100.
The fault indication cannot be reset until the cause of
the fault has disappeared.
14
Description
The electricity
supply has been
2 3
switched off.
The pump is oper-
ating.
2 3
The pump has
been set to stop.
2 3
The pump has
stopped because
of a fault. Restart-
3
ing will be at-
tempted.
The pump is oper-
ating, but it has
been stopped be-
3
cause of a fault.
The pump has
been set to stop,
but it has been
3
stopped because
of a fault.

6.7.4 External forced control

The expansion modules MC xx and MB xx incorpo-
rate inputs for external signals for the forced-control
functions:
• Start/stop input (terminals 7 and 8).
• Max. curve duty (terminals 7 and 10).
• Min. curve duty (terminals 7 and 9).
During forced control, the light fields/indicator lights
on the pump will show which function is active.
Functional diagram: Start/stop input:
Start/stop
H
H
Functional diagram: Max. curve input:
The max. curve input is only active if the start/stop
input is closed.
Max. curve
H
H
Functional diagram: Min. curve input:
The min. curve input is only active if the start/stop in-
put is closed and the max. curve input is open.
Min. curve
H
H
Normal duty
Q
Stop
Q
Normal duty
Q
Max. curve
Q
Normal duty
Q
Min. curve
(night-time duty)
Q