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SECTION 33 - SYSTEM CALIBRATION, SERVICE SETPOINTS, AND RESET PROCEDURES
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS
JCI COMPANY CONFIDENTIAL
33
Mod B Liquid Cooled Solid State Starter
1. At the keypad, log in at SERVICE access level
using Password 1 3 8 0.
2. Select MOTOR Screen.
3. Enter the following setpoints using the procedures
below:
Full Load Amps
This is the Full Load Amps (FLA) of the chiller as
listed on the SALES ORDER Screen. The microboard
uses the programmed value to perform Current Lim-
it functions and display compressor motor current in
terms of %FLA.
1. Press FULL LOAD AMPS key.
2. Use numeric keypad keys to enter correct value.
3. Press ENTER (
) key.
Start Current
The Logic/Trigger Board will limit compressor motor
current to this value during starting. The correct value
is (0.45 x Delta Locked Rotor amps), as listed on the
SALES ORDER Screen.
1. Press STARTING CURRENT key.
2. Use numeric keypad keys to enter correct value.
3. Press ENTER (
) key.
Voltage Range
This is the compressor motor AC power line applica-
tion. Selections are 200-208, 220-240, 380, 400, 415,
440-480, 550-600 and disabled. The microboard uses
the programmed value to determine the overvoltage
and undervoltage shutdown thresholds for LCSSS –
HIGH SUPPLY LINE VOLTAGE and LCSSS – LOW
SUPPLY LINE VOLTAGE cycling shutdowns as de-
scribed in
OptiView Control Panel – Operation (Form
160.54-O1)
. If DISABLED is selected, the shutdown
thresholds will be ignored. This check should not be
arbitrarily disabled.
1. Press VOLTAGE RANGE key.
2.
Use ◄ and ► keys to scroll to desired value.
3. Press ENTER (
) key.
Open SCR Enable/Disable
This allows the Open SCR safety check, performed by
the Logic/Trigger Board, to be disabled. This must NEV-
ER be disabled unless advised by the YORK factory.
1. Press OPEN SCR key.
2.
Use ◄
and
►
keys to select Enable or Disable.
3. Press ENTER (
) key.
Kilowatt Hours (KWH) Reset
This allows the KWH to be set to a desired starting
value in the event the BRAM has to be field replaced.
This must never be arbitrarily performed.
1. Press KWH RESET key.
2. Use numeric keypad keys to enter desired value.
3. Press ENTER (
) key.
Motor Communications Protocol
(Software version C.OPT.01.18.307 (and later))
Allows the Service technician to enable the appropriate
serial communications port for communications with
the Style B Liquid Cooled Solid State Starter (LCSSS).
Early vintage Style B LCSSS communicate with the
microboard using YORK protocol (COM 5 (J15)). Lat-
er vintage units (after mid 2008 use Modbus protocol
(COM 2 (J13)).
The protocol selection enables the appropriate commu-
nications port: YORK enables COM 5 (J15); Modbus
enables COM 2 (J13). Selection required is based on
the hardware and interface that is present. See
TION 13 - SOLID STATE STARTERS
to determine
which hardware/interface is present.
• YORK - Enables COM 5 (J15) serial port. Used
when the microboard is interfaced to the LCSSS
Logic/Trigger Board TB2.
• Modbus - Enables COM 2 (J13) serial port.
Microboard 031-02430-001 or 031-03630-001
is required. Program Jumpers JP14 on the 02430
(BRAM size) and JP17 (COM 2 Serial Mode)
must be set to Pins 1-2 for RS-485. Used when
the microboard is interfaced to LCSSS Logic/
Trigger Board 031-02505 (J14). The 031-02430-
001 microboard can be equipped with either 32K
BRAM (031-02431-000) or 128K BRAM (031-
02565-000).
