MAXICAL
®
III
5511-229 GB/98.06/Rev. B1
24
4.9 Relay Outputs (88-93)
Relay outputs on the combined analogue and relay module are
used for monitoring both the process and the integrator.
Infocode is connected between terminals 92 and 93 when the
voltage supply is in order and MAXICAL
®
III has registered no
system error - corresponding to info = 000. If an info code of
more than 000 has been registered, e.g. if the sensors are faulty or
the supply has been interrupted - the relay will switch to terminals
91-92.
The relay limit is a programmable limit switch. You can select
either power, flow rate, flow temperature, return temperature or
differential temperature and simply enter the required limit value.
When the actual measured value exceeds the limit value, the relay
will be energized and closes the relay contact between terminals
89 and 90.
If you require the opposite function, we would suggest you use
terminals 88 and 89.
The load on the relay contacts must not exceed 100 V AC/DC and
500 mA.