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Installing Cables and Connectors
Wiring Connections for Instrument Power
All IND9D56 configurations come with provisions to provide power to the IND560
terminal and the 24VDC power supply. Instrument power will always be labeled
X1, X2 and GND.
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For best system performance, instrument power must be connected to a clean,
dedicated AC branch circuit. Avoid running power lines in a conduit that also
carries lines to "noisy" AC equipment such as motors, welders and solenoids.
X1 is fused with a 3A 250VAC normal blow fuse. Once X1 has been fused, the
label is changed to X1A to denote that the circuit is protected.
For best performance, do not add any other AC loads to the Instrument Power.
Wiring Connections for Control Power
On IND9D56 systems that have switched output loads such as line voltage reject
devices, sonic alarms, etc, a separate power connection is provided to isolate the
Instrument power away from other sources of conducted noise. Control power is
identified as terminal blocks with X3, X4 and GND labels.
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These connections should also be connected to a clean AC branch circuit, separate
from the Instrument Power. If it is absolutely necessary, the unfused side of the
instrument power can be jumpered to the unfused side of the control power for a
single power source application. This should only be done if a separate control
power circuit is not available.
X3 is fused with a 3A 250VAC normal blow fuse. Once X3 has been fused, the
label is changed to X3A to denote that the circuit is protected.
X1 is live on a single-phase system
X2 is either neutral in a single-phase system, or L2 in a two-phase system
GND is earth ground regardless of the power distribution
X3 is hot on a single phase system
X4 is either neutral in a single phase system, or L2 in a two phase system
GND is earth ground regardless of the power distribution.
IND9D56 Installation Manual
2-5
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