Rockwell Automation 2100 CENTERLINE Smoke Detector Unit - Manual (Page 2)

Publication 2100-IN046B-EN-P—November 2001
2 CENTERLINE Motor Control Centers Bulletin 2100 Smoke Detector Unit
Location The location and placement of the smoke detector unit in the motor
control center is important. The smoke detector unit is to be located
in the bottommost 0.5 space factor unit location. For motor control
center lineups of five (5) sections or less, place one (1) smoke
detector unit in the middle of the lineup. For lineups greater than five
(5) sections, place one (1) smoke detector in the third section from
one end, and evenly space additional smoke detectors (every third
section is recommended).
To assure the most efficient operation, Packaged Control Products
recommends the installation of bottom plates in motor control centers
containing smoke detector units.
Figure 1 Correct placement of smoke detector units
Operation A separate 120 volt, 60 Hz, AC power source is required to operate the
unit and its requisite fan, which is necessary for positive pressure. The
120 volt, 60 Hz, AC power source should be connected to terminal
block points X1 and X2 as shown in the unit wiring diagram (Figure
2).
When the selector switch is in the “ON” position, the control relay
(SR) picks up. This causes the normally closed (SR) contact (terminal
IMPORTANT
There never should be more than four adjacent
sections without a smoke detector unit (refer to
Figure 1).
Location
Smoke detector units