English (GB)
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4.5 Functions
Control and monitoring take place via the functions described in
the following subsections.
4.5.1 Operating functions
Automatic operation
The controller starts the pump when the pressure sensor detects
that the system pressure is lower than the cut-in pressure.
The cut-in and cut-out pressures can be set by means of buttons
[Cut-in] B3 and [Cut-out] B2 (fig. 4). See section
If the pump does not start, indicator light "Fail to Start" will be on
(fig. 5, pos. I7).
The pump can be stopped with [STOP] button A2 (fig. 3, pos. 3)
when the system pressure is higher than the cut-out pressure.
Otherwise, indicator light "Pump Demand" is on, and the pump
can only be stopped by turning the circuit breaker to "OFF".
Automatic stop is also possible. See below.
Automatic stop
In automatic operation, the pump stops automatically when all
starting causes have returned to normal. To use automatic stop,
follow the procedure in section
,
subsection
. Normally, the pump is stopped after
10 minutes, but the run time can be changed. See section
.
Manual operation
For test runs and start-up, manual operation is possible by means
of [START] button A2 (fig. 3, pos. 2) regardless of system
pressure. See section
12.2.1 Manual operation with buttons
To stop the pump, press [STOP] button A3 (fig. 3, pos. 3).
Emergency operation
The pump can be started manually with emergency start handle
A4 (fig. 3, pos. 4). The handle can be kept in a closed position.
See section
12.2.2 Manual operation with emergency start
.
Remote control
The pump can be started by the momentary opening of a remote
contact, independent of the pressure sensor.
Start via an external signal (deluge valve/flowmeter)
The controller can be started by opening a normally closed
contact on the fire protection equipment (deluge valve),
independent of the pressure sensor.
If option A4 is supplied (flowmeter), the pump can be started by
closing a normally open contact from the flowmeter, independent
of the pressure sensor. If option C17 was chosen, control relay
CR39 will be activated when the contact of the flowmeter is open.
If the pump has started because of the flow switch, and the
controller did not detect a pressure drop, the pump will stop when
the flow switch contact opens. If the controller is set for manual
stop only, press [STOP] button A3 (fig. 3, pos. 3) to stop the
pump. When the water flow has subsided, the pump will. If the
controller is set for automatic stop, the pump will stop when the
water flow has subsided, and the run time has expired.
Automatic weekly test
The controller can be set for a weekly test. See section
. When the weekly test is enabled, the
pump starts at the set start time and stops at the set stop time or
after the run time set for automatic stop, whichever is the shorter.
The pump can be stopped with [STOP] button A3 (fig. 3, pos. 3)
before the test is finished (provided that the system pressure is
higher than the cut-out pressure). If the pump was started due to
an automatic weekly test, indicator light "Weekly Test" (fig. 4,
pos. 4) will be on.
If option C4 was chosen, alarm relay "Weekly T." will be activated.
Manual test run
The pump can be started for a running period of 10 minutes by
pressing buttons [Cut-in] B3 and [Cut-out] B2 (fig. 4) at the same
time. Pressing these buttons simulates a pressure drop in the
system.
Start delay
In systems with several pumps, it may be necessary to set a start
delay to prevent all motors from starting at the same time.
The start delay is selectable. See section
,
subsection
.
Phase-reversal test
A phase reversal can be simulated by pressing the [Alarm Reset]
button for more than 10 seconds. Indicator light "Phase Reversal"
(fig. 4, pos. 2) lights up, and alarm relay "Ph. Rev." is activated.
Lockout by other equipment (option A6)
When the NO contact is open, the controller is enabled. If the NO
contact is closed, the controller will be locked and will not start
the pump in case of pressure drop (automatic start). The pump
can always be started manually with the [START] button.
Interlock of other equipment (option A7)
The contacts of relay CR 34 are activated in order to prevent
other equipment from starting.
Division into zones (options A9, A10, A11)
Controllers of different zones can be interconnected so that the
equipment for the different zones can be started in a certain
order.
Anti-condensation heater (options D14, D14A, D14B)
To avoid forming of condensation, the control cabinet can be
equipped with an anti-condensation heater with thermostat
(option D14) or humidistat (option D14A), or both (option D14B).
Motor heater (option D27)
To avoid condensation in the terminal box and the stator, the
controller has a contact for connecting an external single-phase
motor heater, if option D27 has been selected.
4.5.2 Monitoring functions
Monitoring of motor operation
If the power supply has been connected correctly, indicator light
"Power Available" (fig. 4, pos. 1) will be on, and alarm relay
"EPSR Ready" will be activated to signal that the pressure board
(EPSR) is ready and functioning. If option C16 was chosen,
control relay CR27 will also be activated to indicate that the
control voltage is okay.
If the pressure in the discharge pipe falls below the cut-in
pressure, indicator light "Pump Demand" (fig. 4, pos. 3) will be
on. When the pump is running, indicator I8 (fig. 7) is on, and
contact "Run NC/NO" is activated. If option C4 has been ordered,
the extra motor run contact will also be activated. If option C14
has been ordered, control relay CR25 will also be activated.
If the pump remains below 5 % for more than 20 seconds so that
the pump does not start, indicator light I7 "Fail to Start" in display
D1 will be on. If option C15 has been ordered, control relay CR26
will be activated.
In case of an overcurrent or undercurrent condition, alarm relays
"Motor Tr." (fig. 5 and 6, pos. 9) will be activated, and the
corresponding indicator light I1 or I2 in display D1 (fig. 7) will light
up.
Monitoring of power supply
Alarm relays "Pow. Av." (fig. 5 and 6, pos. 9) will be disabled in
case of signal loss of any phase or power, and indicator light
"Power Available" (fig. 4, pos. 1) will be off. Indicator I6 in display
D1 (fig. 7) will light up.
In case of overvoltage, undervoltage or phase failure, the
corresponding indicator lights I3, I4 and I5 in display D1 (fig. 7)
will be on, and alarm relays "Room Al." (fig. 5 and 6, pos. 9) will
be activated.
If an earth fault is detected, the optional control relay CR24 will
be activated.
Monitoring of inlet pressure (option C5)
If a pressure switch is installed in the suction pipe, the optional
control relay CR18 will be activated in case of a pressure drop.
Monitoring of discharge pressure (option C6)
If a pressure switch is installed in the discharge pipe, the optional
control relay CR19 will be activated in case of a pressure drop.
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