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Installation Instruction
Placement
The GX-850M ver. IV and power supply are designed for DIN rail mounting. When mounting please be
aware of the following conditions:
The GX-850M ver. IV is designed and approved to operate in the temperature range
14 °F ( -10 °C) to 104 °F (40 °C).
The GX-850M ver. IV is only NEMA 1 protected, thus not water resistant.
The installer must ensure proper placement of the GX-850M ver. IV according to national
standards (electrical safety).
Connection steps for system
Only authorized personnel is allowed to install the GX-850M ver. IV.
When wiring up the GX-850M ver. IV and sensors, please be aware of the following conditions:
When the GX-850M ver. IV is used in a dual system configuration, it is preferable that each sen-
sor bus (Devibus™) can be connected and disconnected via switches. During the installation of
a dual system, each system must be connected one at a time.
Be aware of maximum allowable power drain from power supply to sensors.
Below is shown the recommended order of the installation. Please refer to Figure A for connection of
GX-850M ver. IV and refer to Figure B-G for a guideline to connect the heating elements to GX-850M
ver. IV.
1. Connect heating cables to the GX-850M ver. IV
•
Please notice that a single system ALWAYS uses the System A output relay.
•
When using external power relay, please refer to the connection diagrams.
2. Connect the power supply to the GX-850M ver. IV
•
Do not connect the power supply to mains yet
3. Connect sensors to the Devibus™
•
When used as a dual system, only the sensors for System A can be connected. For connection
of System B please refer to chapter: "Installation of dual system".
4. Connect the power supply to mains.
VUAPA422
GX-850M ver. IV
© Danfos 2018.10 | 11
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