Mains Wiring
CAUTION: Switch OFF mains power before making any connection.
The mains terminal block is situated at the lower left corner of the metallic
enclosure. Since the 88XX rack monitor is equipped with a high efficient switching
regulator with a wide operating range. No settings have to be made and all voltages
between 110 and 240 Vac are accepted. The two right entries of the main terminals
are used to connect the earth wire and is internally connected to the chassis. The two
left entries are the power terminals and the neutral conductor and the line conductor.
Two internal (2AT) fuses are placed for mains current limitation.
Figure 9
Warning: The electrical installation must be done according local regulations and code of
practice.
Relay Outputs
Three relays are provided. All relays are voltage free relays and
must be used within their specifications.
Function of the relays depends on the dipswitch settings or Sd-card
file. The relay on the outer left side (normally open) is used for
permissive / Non-permissive. Permissive/ Non-permissive is an
combination of dry sensors and good ground verification. The
permissive / Non-permissive relay has an feedback contact that can
be used to switch the second relay.
The second relay AUX1 is an multipurpose relay and can be
configured to for fill different functions. AUX1 relay is also used for
the secondary detection circuit.
The last relay AUX2 is added for other functions.
Ask OPW Engineered Systems for other available functionalities.
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