
TD021000-0MB
12
5.1.2
Connecting to Power
The EISC requires power via its four-pin connector. The
keyed plug is removable and is included with the switch.
The applied voltage may be either AC or DC. For power
requirements, consult the specifications. Conductors in
the range of 12–24 AWG are secured in the plug by
screw terminals. The various power options are
explained below.
NOTE: This device is intended for use with Class 2
circuits.
Figure 3 — The Power Connector
5.1.2.1 DC Powered
The EISC accepts a voltage range of 10-36 VDC and draws a value of current
commensurate with 12-watt power consumption. Power conductors should be sized
accordingly. Ground is directly connected to zero volts and the equipment chassis is
isolated from zero volts. The input connections are reverse-polarity protected.
Figure 4 — DC Powered
5.1.2.2 Redundant DC Powered
Redundant diode-isolated DC power inputs are provided so the EISC can operate
despite the loss of primary power. Both sources must provide 12 watts of power.
Figure 5 — Redundant DC Powered
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