Grundfos Fire DNF, Инструкция по установке и эксплуатации

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English (GB)
21
10. Electrical connection
10.1 Controller on base frame
The electrical connection must be carried out according to the
wiring diagram in the control cabinet.
Connection of power supply
• The connection to the power supply must be fitted with a fuse
of the correct size in accordance with local regulations and
connected to terminals L1-L2 and L3 on the isolating switch.
The electronic board is phase-sensitive, and the power
conductors must therefore be connected in the correct order of
phases. The wiring must typically be sized for minimum 125 %
of the full-load current of the pump.
Connection of external sensor signals
• If a pressure switch is installed in the suction pipe, connect it
to terminal bar TB12 (fig. 5 or 6, pos. 9). Use one of terminals
AL No 1 to 4.
• If a pressure switch is installed in the discharge pipe, connect
it to terminal bar TB12 (fig. 5 or 6, pos. 9). Use one of
terminals AL No 1 to 4.
• If a pump room thermostat is installed, connect it to terminal bar
TB12 (fig. 5 or 6, pos. 9). Use one of terminals AL No 1 to 4.
• If the water reservoir level is to be monitored, connect the float
switches for low and for high level to terminal bar TB12 (fig. 5
or 6, pos. 9). Use one of terminals AL No 1 to 4.
• If a vibration sensor is installed in the fire pump set, connect it
to terminal bar TB12 (fig. 5 or 6, pos. 9). Use one of terminals
AL No 1 to 4.
• If the motor temperature is to be monitored, connect the
temperature sensor to terminals 89-90.
• If the status of the flowmeter (option A4) is to be indicated,
connect the signal cable of the flowmeter to terminal bar TB12
(fig. 5 or 6, pos. 9). Use one of terminals AL No 1 to 4.
Connection of external control signals
• If the pump is to be started by a remote signal, connect the
signal cable to terminal "Remote St NC" (fig. 5 or 6, pos. 9).
• If the pump is to be started by a signal from a deluge valve,
connect the valve contact to terminal "Deluge NC" (fig. 5 or 6,
pos. 9). Remove jumper J1 to enable the function.
• If the pump is to be started by a signal from a flow switch (NO),
connect the signal cable to terminal "Flow switch" (fig. 5 or 6,
pos. 9).
• If the fire pump set is to be locked by external equipment
(option A6), terminals 3-110 can be used to connect a NO
contact when the interlocked equipment is in the same pump
room and wiring is mechanically protected. Otherwise,
terminal 104-106 must be used when connecting a remote
control voltage from the other equipment. Make sure that the
control voltage from other equipment and that from control
relay CR10 are compatible. For electrical connection, see also
the label in the control cabinet.
• If the fire pump sets are divided into zones (options A9 to
A11), see the label in the control cabinet.
Connection of external equipment
• If the controller is to lock other equipment (option A7), see the
label in the control cabinet.
• If a motor heater is to be connected, see the label in the
control cabinet.
All other external sensors must be connected to the terminals
shown on the wiring diagram in the control cabinet.
10.2 Wall- and floor-mounted controller
In the case of wall- or floor-mounted controllers, the connections
to the motor must also be made besides the connections
described in section
10.1 Controller on base frame
.
Type GPA
The motor must be connected to terminals T1, T2 and T3 on the
main contactor (1M). The wiring must typically be sized for
minimum 125 % of the full-load current of the pump.
Type GPY
The motor must connected to terminals T1-T2-T3 on contactor
1M and T4-T5-T6 on contactor 2M. The wiring must typically be
sized for minimum 125 % of the full-load current of the pump.
10.3 Connection to standard alarm relays
If operating and alarm messages are to be transferred for
instance to a building management system, conductors can be
connected to the standard alarm relays (fig. 5 and 6, pos. 9).
The alarm relays has one NO and one NC contact.
The table below gives an overview of standard alarm relays.
Warning
Check that the supply voltage specified on the
nameplate of the control cabinet corresponds to
the local conditions.
The electrical connection should be carried out
by qualified personnel in accordance with local
regulations.
Caution
The dimensional drawings show the area suitable
for power and motor connections. No other
location must be used. Only watertight hub
fittings must be used when entering the cabinet
to preserve the NEMA rating of the cabinet.
Relay Function
RUN Indicates that the pump is running.
Pow. Av.
Indicates that power supply is okay.
If deactivated, there is a phase or power failure.
Ph. Rev. Indicates phase reversal.
Room Al.
Indicates one of the following conditions:
- Overvoltage
- Undervoltage
- Phase unbalance.
Motor Tr.
Indicates one of the following conditions:
- Overcurrent
- Undercurrent
- Fail to start
- Earth fault.
EPSR ready
Indicates that the pressure board (EPSR) is
ready and functioning.