Low Voltage Compartment - Toshiba JK 400 Series Instruction Manual

Basic Installation and Operation Guide

Low Voltage Compartment

The low voltage compartment contains controller components rated 600 volts maximum,
which may include such items as overload relays, pilot devices, control relays, etc.
Hazardous Voltage. Turn off and lock out control circuit
WARNING
power before servicing.
The location and size of the low voltage compartment will vary depending on the
particular controller arrangement. In the standard one-high controller, the low voltage
compartment is located in the upper half of the enclosure. In a typical two-high controller,
the low voltage compartment is located in the center of the enclosure. A subpanel is
located behind the low voltage door, which is used to mount various relays and other
control devices. The low voltage subpanel is hinged in such a way that it can be swung
open (Fig. 35a), if necessary, to gain access to the main horizontal bus by removing
barriers (Fig. 35b) located directly behind the panel.
Hazardous Voltage. Turn off and
lock out all control and primary
DANGER
power before opening this panel.
A low voltage vertical wireway (Fig. 36) feeds directly into the lower left hand corner
of the low voltage compartment. This wireway provides isolation for control wires
entering the bottom of the enclosure. Control wires entering the top of the enclosure
feed directly into the low voltage compartment. A horizontal low voltage wireway is
provided at the lower front of the low voltage compartment. At each end of the
horizontal wireway there is an opening for inter-cubicle control wiring.
TOSHIBA
JK 400 Series Fixed Controllers
Fig. 35a Low Voltage
Swing-out Panel
Fig. 35a Access to Main Bus
Through LV Compartment
Fig. 36 Typical Low Voltage
Vertical Wiring Route
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