Figure 13 RS485 mul-drop
connecon
1. RS485 interface on control equipment 2. nEXT pump logic interface1. RS485 interface on control equipment 2. nEXT pump logic interface
4.13 Motor controller auxiliary connector socket
The nEXT pump has a 4-wa
y auxiliary connector socket on the front of the motor
controller.
The mang plug for this connector is available pre-ed to a number of accessories or
as an accessory on its own (refer to Accessories).
The connector is intended to power a vent valve and/or fan. The connector is shown in
Figure: Valve connector, with the polarity of the pins marked when the vent valve or fan
are energised.
The auxiliary connector output is regulated to 24 V d.c. to control the accessories, even
when the pump is operang from a 48 V d.c. supply and is protected against overload
and short circuits. If the auxiliary load current exceeds the value in Table: Motor
controller technical data, the output will shut down to protect the motor controller.
Table 13
Motor controller technical data
Descripon Data
Connector plug Phoenix part number SACC-DSI-M 8FS-4CON-M12/0.5
Voltage output 24 V d.c. -25%, +10% (18 V d.c. to 26.4 V d.c.)
Current output 750 mA
The motor controller connector provides two independently congured and controlled
outputs, Aux output 1 and Aux output 2. This enables any combinaon of fan or vent
valve accessory to be connected, congured and controlled appropriately. Aux output 1
is congured via Vent opon 1 and Valve 1 type and Aux output 2 is congured via Vent
opon 2 and Valve 2 type (refer to Vent valve control on page 77). Aux output 1 has
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B8J200880_D - Technical data
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