Configuration/Setup - Johnson Controls YORK OPTIVIEW YK Series Service Instructions Manual

SECTION 4 - MICROBOARD 031-02430-000 AND 031-02430-001
with 100 positions or steps (Refer to Figure 20 on Page
66). The Lamp Dimmer controls the position of the
potentiometer. The Lamp Dimmer varies the bright-
ness of the backlight by applying a variable voltage (0
to 5.0VDC) or a variable resistance (0 to 10K ohms)
to the Backlight Inverter Board. If Program Jumpers
JP7 and JP8 are installed, the Lamp Dimmer output
is a variable voltage; if both are removed, the output
is a variable resistance. The Lamp Dimmer outputs
"Brightness Control Wiper" (J6-7) to the Backlight In-
verter Board. If configured for variable voltage output,
the voltage between J6-7 and J6-8 can be varied from
0VDC (100% brightness) to 5.0VDC (0% brightness).
If configured for variable resistance, the resistance be-
tween J6-6 and J6-7 varies from 0 ohms (0% bright-
ness) to 10K ohms (100% brightness).
Refer to SECTION 6 - LIQUID CRYSTAL DISPLAY,
SECTION 7 - DISPLAY INTERFACE Board, and SEC-
TION 8 - DISPLAY BACKLIGHT INVERTER Board of
this manual for details of the display interface.
Remote Setpoints
Remote Leaving Chilled Liquid Temperature and Cur-
rent Limit setpoints can be input via the RS-232 E-Link
Gateway interface at J2 or directly to the microboard
at J22 (Refer to Figure 22 on Page 68). The inputs
at J22 are configured with Program Jumpers JP23 and
JP24 to accept these inputs in either 0 to 10VDC, 2 to
10VDC, 0 to 20mA or 4 to 20mA form. Refer to Pro-
gram Jumper configurations and SECTION 21 - RE-
MOTE SETPOINTS of this manual for details of the
Remote setpoints.

CONFIGURATION/SETUP

The following functions are entered as setpoints on the
SETUP Screen. Refer to entry instructions in SECTION
32 - SYSTEM CALIBRATION, SERVICE SETPOINTS
AND RESET PROCEDURES of this manual.
Chilled Liquid Pump Operation – Determines
Chilled Liquid Pump control contacts (I/O Board TB2-
44/45) operation when chiller shuts down on cycling
shutdowns. Selections are:
1. Standard – Contacts open at completion of System
Coastdown after all shutdowns except LEAVING
CHILLED LIQUID – LOW TEMPERATURE.
On this shutdown, they remain closed, causing
the pump to continue to run while the chiller is
shutdown.
56
2. Enhanced – Contacts open at completion of Sys-
tem Coastdown after all shutdowns except LEAV-
ING CHILLED LIQUID – LOW TEMPERA-
TURE, MULTI-UNIT CYCLING- CONTACTS
OPEN and SYSTEM CYCLING – CONTACTS
OPEN. On these shutdowns, they remain closed,
causing the pumps to continue to run while the
chiller is shutdown.
Motor Drive Type – Configures the program for the
applicable compressor motor drive type. Selections
are:
1. EM – Electromechanical Starter
2. SSS-Mod A – Style A Solid State Starter
3. SSS-Mod B – Style B Solid State Starter
4. VSD-60Hz – Variable Speed Drive, 60Hz
5. VSD-50Hz – Variable Speed Drive, 50Hz
6. MV VSD – 60Hz (Microboard 031-02430-001
with software version C.OPT.01.16.xxx (or later)
7. MV VSD – 50Hz (Microboard 031-02430-001
with software version C.OPT.01.16.xxx (or later)
8. MV SSS – (Microboard 031-02430-001 with soft-
ware version C.OPT.01.15.xxx (or later)
Anti-recycle – Enables or Disables the Anti-recycle
timer. Selections are:
1. Enabled – Enables the anti-recycle timer. Solid
State Starters and electromechanical starter appli-
cations cannot be started at intervals shorter than
once every 30 minutes. VSD applications can be
started at the completion of System Coastdown up
to 5 times. On the 5
th
is started and restart is inhibited until the timer
has elapsed.
2. Disabled – Disables the anti-recycle timer. Chill-
er can be started at the completion of System
Coastdown, regardless of how long the chiller had
been running.
The Anti-recycle timer must never be
disabled unless advised by YORK factory.
FORM 160.54-M1
shutdown, a 10-minute timer
JOHNSON CONTROLS