KKT chillers nBoxX 1.5, Руководство по эксплуатации

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5.4.2 5.4.2 5.4.2 5.4.2 Connecting the alarm relay interrogation device Connecting the alarm relay interrogation device Connecting the alarm relay interrogation device Connecting the alarm relay interrogation device
You can also query fault messages with two floating contacts on a separate connection clamp of the
cooling unit. The necessary wires are already present in the connection cable and are connected in
the device. Connect the correspondingly labelled wires of the connection cable to the controller as
shown in the electrical circuit diagram (see circuit diagram for the relevant unit type).
5.4.3 5.4.3 5.4.3 5.4.3 External activati External activati External activati External activation on on on
The unit has been prepared with the option for control via an external signal. To implement this, the
customer must connect 24 V DC to contacts 1 and 2 (note polarity; see circuit diagram according to
unit type) and set parameter 18 to 1 (see description of the controller).
5.4.4
5.4.4 5.4.4
5.4.4 Connecting the cooling unit to the PLC
Connecting the cooling unit to the PLC Connecting the cooling unit to the PLC
Connecting the cooling unit to the PLC
To evaluate individual fault messages, the unit can be connected to a programmable logic controller
(PLC). The connection is made with a 15-pole Sub-D socket. Use a suitable line to connect the PLC to
the 15-pole Sub-D socket
For type nBoxX1.5:
For type nBoxX1.5: For type nBoxX1.5:
For type nBoxX1.5:
Fig. 7 PLC connection for nBoxX1.5
•
Remove the louvered grille (2
2 2
2) on the rear of the cooling unit.
•
Remove the housing (1 1 1 1).
•
Guide a suitable connection cable into the unit via the additional cable gland provided
•
Connect the cable to the 15-pole Sub-D socket