Johnson Controls YORK YK MaxE, Operation Manual

Page: 86 / 184

JOHNSON CONTROLS
86
FORM 160.54-O1
adaptiVe CapaCitY CoNtroL detaiLs sCreeN
YORK Protocol Configuration
(Software version C.OPT.01.19.307 and later)
oVerVieW
This screen displays detailed information pertaining
to the Adaptive Capacity Control (ACC). It is shown
above with the Optiview-to-VSD serial communications
hardware/interface in the “YORK protocol configura -
tion” (Service Technicians refer to Optiview Service
Manual 160.54-M1 to determine existing hardware/
interface configuration). This configuration was used
in new production chillers prior to March 2007. In this
configuration, the microboard communicates with the
VSD Logic Board via the ACC Board using YORK pro-
tocol serial communications. The ACC Board performs
the ACC function. The Motor Communications Protocol
Setpoint (on the SETUP Screen) is set to YORK in this
configuration.
Requires login access level of SER-
VICE. Service technicians refer to
yoRK Service Manual 160.54-M1 for
setpoint entry instructions and expla-
nation of all programmable setpoints
and displayed values.
optiView Control Center
LD14338
fig. 22a
dispLaY oNLY
% Full Load Amps
Displays the motor current as a percentage of chiller full
load amps as calculated by the microboard from current
values returned from the drive Logic Board.
Current Limit Setpoint
Displays the current limit setpoint value in use. This
value could come from a 0-20mA, 4-20mA, 0-10VDC
or 2-10VDC input in Analog remote mode, PWM in-
put in Digital remote mode, Microgateway interface
in ISN remote mode or locally programmed value in
Local mode.
Motor Run (LED)
Illuminated when the control center is commanding the
drive to run. Otherwise, it is extinguished.
Output Frequency
Displays the frequency at which the drive is operating
the motor. This value is provided by the drive Logic
Board.
Pre-rotation Vanes Position
Displays the present pre-rotation vane position as a value
between 0% (closed) and 100% (full open). This value
is provided by the ACC Board.