Spencer Load Control Safety Switch - Manual (Page 3)

The Spencer Turbine Company 600 Day Hill Road Windsor, CT 06095-4706 TEL 800-232-4321 ◆ 860-688-8361 ◆ FAX 860-688-0098 3
IV. Alarm Status
The LCSS Universal Controller provides
both Low Load (surge) protection and
Overload protection. These alarm condi-
tions are displayed on the digital display
(11) and in the “Function” group. Each
mode of protection provides two tiers of
alarm indication. The first tier is a Warning.
When the machine is within 5 percent of
either the Low Load set point or the
Overload set point, the corresponding LED,
Low Load (5) or Overload (2), will flash.
The flashing LED is a visual indicator that
the machine is close to the shutdown set
point and precautionary measures should
be taken. A common “Warning” relay (K3)
will also be energized. The form “C” contact
may be used for remote indication of
“Warning” status.
The second tier is a Shutdown. In the
Shutdown state, the corresponding alarm
LED, Low Load (5) or Overload (2), will illu-
minate and the digital display (11) will show
“L Ld” for Low Load or “O Ld” for Overload.
The starter relay (K1) will also de-energize,
shutting down the blower or vacuum pro-
ducer. The common “Shutdown” relay (K2)
will also energize. The form “C” contact
may be used for remote indication of
“Shutdown” status.
To clear any Warning or Shutdown alarm,
the Reset/Enter “R/E” button (8) must be
pressed for 5 seconds or the control panel
“Stop/Reset” button must be pressed. The
start button must then be pressed to restart
the blower or vacuum producer.
Note: The “O Ld” display will flash if the
motor current exceeds the Full Load
Amp (FLA) rating of the motor that is
programmed into the controller at
Spencer.
V. Wiring Diagram
Specifications
Dimensions (H x W x D) Overall 5 1 /
8
x 6 1 /
8
x 3 Cutout 4 3 /
4
x 5 3 /
4
x (n/a) Part Number CTB 90007
Digital Display 7 Segment / LED 5 /
8
High Display Amps / SCFM
Power Supply 120/240 VAC, 1Ø, 50/60 Hz
Inputs Analog (1) 0-5A Current Transformer
Digital (2) 120 VAC (Enable, Reset)
Outputs (3) Provided Rated @: 5 A General Overload Shutdown,
Purpose, 250 VAC; 1 /
6
HP 120 VAC, Low Load Shutdown,
2A Pilot Duty, 120 VAC Common Warning Alarm
Nema Ratings 1, 12, 4 Note: N-1, 12 and 4, Indoor Only
Agency Approvals UL 873 File #E151368, 97ME50259, DD/215K
CUL CAN/CSA 22.2, No. 24-93
Note: Dotted lines indicate field wiring.