JOHNSON CONTROLS
17
FORM 160.00-O2
ISSUE DATE: 04/30/2019
3
SECTION 3 – LOGIC/TRIGGER BOARD
GENERAL INFORMATION
The new Logic/Trigger Board is basically an integra-
tion of the functions in the Logic and Trigger Board
in the Style A LCSSS. The new board uses a micro-
processor, a digital signal processor, and a program-
mable logic device to duplicate the functions of the
older analog boards. This new board is located in the
LCSSS cabinet.
The Logic/Trigger Board communicates with the Mi-
cro Board in the OptiView Control Center via a serial
communications link made up of a three-wire cable
connected to TB1. The serial communications link is
used to send all displayed data related to the starter,
fault messages, and history data. This data is transmit-
ted every 2 seconds, and then the data on the display of
the OptiView Control Center is updated.
CURRENT SCALING
In order for the motor current to be properly scaled
by the Micro Board, the Logic/Trigger Board sends a
scaling code via the serial communications link to the
Micro Board in the OptiView Control Center. The scal-
ing code is determined by how jumpers are arranged
on the J1 connector on the Logic/Trigger Board. Also,
each model size of starter uses a different CT ratio.
(See
Since these jumpers are used to determine the size of
the starter, a common Logic/Trigger Board can be used
for 60 Hz applications. This will simplify the replace-
ment of the Logic/Trigger Board. Each model has a
different current capability, as outlined in
The motor FLA and the Starting Current are pro-
grammed on the OptiView Control Center. Refer to the
ASSOCIATED LITERATURE on Page 3
for details
about which form is needed to program these values.
Also, within these model classifications, there are vari-
ous line voltage applications.
TABLE 3 -
CURRENT CAPABILITY
LCSSS MODEL
MIN
FLA
MAX
FLA
MAX
LRA
MIN START
CURRENT
MAX START
CURRENT
MAX
DISPLAY
AMPS
7L-40, 46, 58 and 50
35
260
1556
310
700
1163
14L-17, 28,40, 46, 58 and 50
65
510
3111
620
1400
2326
26L-17, 28, 40, 46, 58 and 50
125
850
5780
1150
2600
4319
33L-17, 28, 40, 46, and 50
215
1050
7335
1460
3300
5482
TABLE 2 -
CT RATIO
MODEL SIZE
PINS JUMPERED TOGETHER ON J1
CT RATIO
7L
J1-7 TO J1-8, J1-8 TO J1-9, J1-9 TO J1-10
700:1
14L
J1-8 TO J1-10, J1-9 TO J1-10
1400:1
26L
J1-7 TO J1-10, J1-9 TO J1-10
2600:1
33L
J1-9 TO J1-10
3300:1
Содержание SSS 14L-B
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