Honeywell 5701 Operating Instructions Manual page 132

MAN0443.P65 Issue 13 Aug 04
05701-M-5001 A02279
CHAPTER 4 - INSTALLATION INSTRUCTIONS
17. AC TO DC POWER SUPPLY UNIT CONNECTIONS
The AC to DC Power Supply Unit must be earthed.
The input supply to the AC to DC Power Supply Unit may be:
a. an ac supply of 85V to 264V at 47Hz to 440Hz.
b. a dc supply of 110V to 340V (Refer to Zellweger Analytics for
information on dc supplies).
The supply must be fused at 6A maximum at the supply source. eg. At
the distribution panel. Where additional cabling is used this must be
mains rated for a minimum of 6A.
Two cables emerge from the rear of the AC to DC Power Supply Unit:
a. AC Input
The ac supply cable connections are colour coded BROWN - LIVE,
BLUE - NEUTRAL and YELLOW/GREEN - EARTH. If necessary,
these wires should be connected to the ac supply via a suitable
intermediate mains rated terminal block.
b. DC Output
The dc output cable connections are colour coded RED - +24V and
BLACK - 0V. These should be connected to the appropriate DC
Input Card terminals.
It is recommended that the AC to DC Power Supply Unit is connected
to the system earth using the earth stud provided at the rear of the unit.
For additional electrical safety a Residual Current Device (RCD) type
circuit breaker should be used at the supply source.
WARNING
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5701 Control System