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Relay Outputs
The two relays can be programmed to a variety of alarm and control functions.
The relay contacts are all rated at 2A at 115V AC. Wiring should be
completed by using suitable cable, to meet the specified 115V AC 2A contact
rating, up to maximum size of 14AWG. All connections should be such that
the short circuit capacity of the circuit to which they are connected, is limited
by fuses rated so that they do not exceed the relay rating.
Current Output
This is an isolated mA output of 4 - 20mA or 0 - 20mA, and the load should
not exceed 1K
.
RS232 Serial Interface
The serial interface is used to programme the blackbox either via a PC
(standard) using the software supplied or alternatively using the hand-held
calibrator (optional).
Fuse Location
The mains fuse is located, on the bottom board, to the left of the mains
terminals, as illustrated below.
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