Original instructions IB-308
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Electric Installation
Nominal voltage 27,2V DC, measured at the
cable connections of the motor.
Voltage range: 16 – 32V DC
The motor can withstand excessive voltage
or excessive ambient temperature as long as
they are within the given ranges. However,
both excessive voltage and ambient
temperature will have a negative impact on
the service life of the pump.
In rush current
• When connecting the main power
supply, red lead to positive (+) terminal
and black lead to negative (-) terminal
the capacitors will become charged.
Approx. 300A during 1,3 ms.
• Current is limited electronically to 17,5A.
Fuse: Recommended fuse size 25 – 30A.
Cable connections
• Red to positive terminal (+),
wire size AWG 12.
• Black to negative terminal (-),
wire size AWG 12.
• White, control cable, Vin 0-10V or PWM
(see item Speed control below),
wire size AWG 16.
• Blue, speed signal, Tacho out,
12 ppr (pulses per revolution) 0 – 5V
used to register pump speed,
wire size AWG 16.
The motor has a built in polarity protection to
avoid damage if wrongly connected.
In order to start pump, supply nominal voltage
at main power supply, red cable + and black
cable - and >2V – 32V at white control cable.
Voltage range for main power supply
(red + and black – cable) 16 – 32V DC.
Use of a relay for start/stop function is not
recommended.
Note! Before installation with electrical control
systems, check that equipment to be used is
of sufficiently rated capacity to accept ampere
draw of motor, 17,5 Amp.
Note! Voltage >35V may cause damage to the
electronics.
Note! In order to obtain flammability according
to UL94 Class V0, the separate wires must not
be exposed.
Three Connection Alternatives
1. Three wire connection
• Connect red and white wire to plus
terminal (+).
• Connect black wire to negative
terminal (-).
• Tacho out signal is available at
blue wire, 12 ppr (pulses per revolution),
0 – 5V.
• The pump will operate at full speed.
• Speed control only available by variation
of supply voltage, 16- 32V.
2. Four wire connection/sleep mode/
speed control
• See image 3, page 13.
• Using this alternative, full voltage is
required at main power supply (red (+)
terminal and black (-) negative terminal).
• The pump starts up at voltage at white,
control wire, >2V. At voltage <2V pump
stops and goes into sleep mode. Power
consumption at sleep mode is 6,5 mA.
• Pump speed can be controlled by
Vin >2V and <10V at the white control wire.
At voltage >10V at the control wire pump
runs at full speed.
PWM signal into white cable is also useful
in order to control speed.
• Tacho out signal is available at blue wire,
12 ppr (pulses per revolution), 0 – 5V.
• Max Voltage for Vin = 32V on white control
wire.
3. Connection/control via an external
Micro controller
• See Image 4, page 13.
Speed control
• In order to start up the pump, supply
nominal voltage at main power supply, red
(+) and black (-) and >2V – 32V at white
wire.
Analogue speed control
• White control wire.
• Vin 0 – 10V DC.
• 0 - <2V, no operation, sleep mode.
• >2V – 9,5V, pump operates with Constant
speed, 2500 – 5750 rpm.
Example:
6 Vin; 400*4 (6-2) + 2500 =4100 rpm
(see Figure 7, Speed Map, Page 19)
• 10 to 32V, pump operates at full speed
• Speed control by Vin, approx.
400 rpm/V.
12