ULTRA 3 INSTRUCTION MANUAL
26
Relay Outputs
The three relays can be programmed for a variety of alarms, pump control,
or other process functions. The relay contacts are all rated at 5A at 240V AC.
All connections should be such that the short circuit capacity of the circuits
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 (floating) mA output (to 150 V), of 4 - 20mA or 0 - 20mA,
and the load should not exceed 500
.
RS2323 Serial Interface
If required, you can connect to the serial interface to operate your Ultra 3
remotely.
Voltage selector and fuse location
The voltage selector switch and mains fuse is located, inside the terminal
compartment, to the left of the mains terminals, as illustrated below.
Important Information
Before applying AC power (mains), make sure you have correctly selected the
voltage selector switch, as detailed in the preceding pages.
Please note that all units are supplied set to 230 volts AC for safety reasons.
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