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Technical data
B800-00-880 Issue D
2.9 Controller connector socket
The nEXT pump has a 3-way controller connector socket in the side of the controller. When the pump is shipped, this
connector is concealed by a black protective cover. If the connector will be used, the cover should be removed by
levering with a small screwdriver. The mating plug for this connector is supplied with the pump.
The connector is intended to drive a vent valve or fan connected to the three pins. The connector mating plug is
shown in Figure 9, with the polarity of the pins marked when the vent valve/fan is energised.
The 24 V d.c. output on the controller connector is protected against overload or short circuit to 0 V d.c./24 V d.c.
Rtn/chassis. The output is guaranteed to supply the current given in Table 12, but for higher currents the output
voltage will be reduced and may turn off completely to limit current.
Figure 9 - Controller connector showing pin numbers
Table 12 - Controller technical data
Description Data
Connector plug Phoenix part number FK-MC1881338
Voltage output 24 V d.c. -25%, +10% (18 V d.c. to 26.4 V d.c.)
Current output 500 mA
Pin number Signal Polarity
124 V d.c. Out+
2 Chassis
324 V d.c. Rtn-
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