IM 12D7B4-E-H
7
4-20 mA
HAND HELD
OUTPUT
SIGNALS
mA1
mA2
S1
S2
CONTACT
OUTPUT
SENSOR
POWER
9.6 to 30 VDC, 10W max
85 to 265 VAC, 10VA max
INPUT CONTACT
Figure 3-7. System configuration
3-5. Wiring the power supply
Make sure the power supply is switched off. Also, make sure that the power supply is
correct for the specifications of the EXAxt and that the supply agrees with the voltage
specified on the textplate.
Local health and safety regulations may require an external circuit breaker to be installed.
The instrument is protected internally by a fuse soldered to the printed circuit board.
The fuse rating is dependent on the supply to the instrument.
Fuse ratings are:
For the DC version 1 A
For the AC version 125 mA
250 Volt, Time-lag T, IEC60127
3-6.Wiring the Relay Contacts
Connect the relay contacts having regard to the use to which the relays are put. The
voltage and current being switched should determine the type of wire used. Because the
relays may be used to switch higher voltages, there is a cover for the terminal block (and
mains supply terminals) that should be clipped in place when the wiring is completed. This is
to prevent electric shock to unwary personnel.
Action
Power OFF
Power ON
Alarm OFF
Power ON
Alarm ON
S1, S2
FAIL
NC
NC
NO
NC
NC
NO
common
NC
NO
LED
3-8. Normally open and normally closed
Summary of Contents for SC150
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Page 21: ...IM 12D7B4 E H 15 5 MENU STRUCTURE COMMISSIONING...
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