Instruction Manual

HMP230 SERIES
M210225en-B Appendix 7: Alarm output unit
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ALARM OUTPUT UNIT
The alarm output unit consists of two alarm relays and two opto-isolated
outputs (see Figure 1). The relay output 1 is available at screw terminal X1
and the relay output 2 at screw terminal X2. The opto-outputs are activated
simultaneously with the corresponding relays and available at screw terminal
X5.
Figure 1 Relay and opto-outputs
When the relay is not activated, the C and NC outputs of the screw terminal
are closed. When the relay is activated, these outputs are opened and the C and
NO outputs are closed. If required, the relays can be activated by inserting a
jumper to the test connector X4. By inserting the jumper to two pins on the
left, relay 1 is activated and by inserting the jumper to two pins on the right,
relay 2 is activated.
The alarm output unit is delivered with the alarm outputs in OFF mode (not in
use). Therefore, the customer needs to set and take into use the desired
outputs.
If the mains power is in use, only an authorized electrician may connect the
alarm unit. A readily accessible disconnect device shall be incorporated in the
fixed wiring (IEC 950).
For alarm output cabling, remove the plastic plug in the transmitter housing
and replace it with the cable gland. Fasten the alarm unit to the bottom of the
housing with four screws. Attach the grounding wire with the screw and
washer to the grounding terminal on the right-hand side of the module if the
mains power is in use. Attach the ribbon cable from X3 of the alarm unit to
the X16 on the main board of the transmitter.
NOTE
NO jumper in connector X4 during normal operation.
When one alarm unit relay is on, the corresponding LED is lit.