Dwyer LTC - Manual

The Series LTC Tilt Switch Control Units feature an adjustable time
delay and a logic selector switch. There are two contacts for connection
to the probe (three contacts for intrinsically safe probes); three for the
input power; and two sets of output contacts, each with one normally
open, one normally closed, and one common. Signal lights, relay, and
transformer are all accessible with the box cover open allowing for easy
maintenance. The controller output is through a relay, which provides a
change in contacts as the probe moves from vertical to tilt and vice
versa. The user may choose to employ either the normally open, nor-
mally closed, or both sets of contacts to perform switching operations in
the system. In addition, an adjustable time-delay feature may be
assigned to either the vertical or the tilt position to prevent false signals.
The time delay is adjustable from one to ten (1 to 10) seconds. The relay
assumes the de-energized position upon reaching the end of the delay
period-as well as upon failure of power to the controller.
Series LTC Tilt Switch Control Unit
Specifications - Installation and Operating Instructions
Bulletin L-29
SPECIFICATIONS
Temperature Limit: 125°F max (52°C).
Power Requirement: 115 VAC @ 50/60 Hz.
Power Consumption: 10W.
Switch Type: DPDT.
Electrical Rating: 10 A @ 115 VAC.
Enclosure: None or Carbon Steel housing with polyester coating.
Enclosure Rating: None or NEMA 4.
Electrical Connections: Screw Terminal.
Conduit Connections: None.
Indication Light: Green (when relay is energized and probe vertical),
Red (when relay is de-energized and probe tilted).
Indication Light Power Required: 18 VDC.
Time Delay: 1 to 10 sec. Adjustment will delay output relay action.
INDICATOR LIGHTS
Normal (green): Light on when relay is energized; probe is vertical.
Alarm (red): Light on when relay is de-energized; probe is tilted.
WIRING
All wiring should be in compliance with applicable Local, Federal, and
State codes. Cable is connected to the probe.
For control unit LTC2, holes must be made in the control unit to connect
the probe wire to the electrical connections inside the control unit.
Typically, these holes are made on the bottom surface of the unit.
PROXIMITY CONTROLS
Phone: 219/879-8000 www.dwyer-inst.com
A DIVISION OF DWYER INSTRUMENTS, INC. Fax: 219/872-9057 e-mail: [email protected]
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
8-3/4
(222.25)
8-1/4
(209.55)
1-9/32
(32.54)
4
(101.6)
1-21/32
(42.06)
RED LENS
GREEN LENS
9-1/2
(241.3)
4
4-7/8
(123.83)
3-29/32
(99.16)
6-3/64
(153.59)
CONTROL UNIT