Electro-Mechanical Starter Screen; Figure 28 - Electro-Mechanical Starter Screen - York YK Style H Operation Manual

FORM 160.76-O2
issue date: 6/15/2015

ELECTRO-MECHANICAL STARTER SCREEN

FIGURE 28 - ELECTRO-MECHANICAL STARTER SCREEN

OVERVIEW
This screen displays all information pertaining to an
Electro-Mechanical Starter.
DISPLAY ONLY
Motor Run (LED)
Indicates whether the digital output from the controls is
commanding the motor to RUN.
% Full Load Amps
Displays the motor current as a percentage of the Full
Load Amps (FLA) value. For the Electro-Mechanical
Starter this is the data returned by the CM-2 board.
Current Limit Setpoint
Displays the current limit value in use. This value could
come from a 0 to 20mA, 4 to 20mA, 0 to 10VDC or 2
to 10VDC input in Analog Remote mode, PWM signal
in Digital Remote mode, E-Link Gateway interface in
ISN mode, or a locally programmed value.
Pulldown Demand Time Left
Displays the time remaining in the programmed
pulldown period if the value is nonzero.
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
For fields requiring access level of SER-
VICE. Service Technicians refer to the
OptiView Control Center - Service Instruc-
tions (Form 160.76-M1) for operation
instructions and explanation of all pro-
grammable setpoints and displayed values.
PROGRAMMABLE
Local Motor Current Limit
Access Level Required: OPERATOR
Allows the user to specify the maximum allowed mo-
tor current (as a percentage of FLA). When the motor
current reaches this value, the Pre-rotation Vanes will
not be permitted to open further. If the motor current
rises above this value, the Pre-rotation Vanes will close
to reduce the current to this value.
Pulldown Demand Limit
Access Level Required: OPERATOR
Allows the user to specify the current limit value (as a
percentage of FLA) to which the chiller will be limited
during the specified pulldown limit time. This value
will override the Motor Current Limit value during this
time period. This function is used to provide energy
savings following chiller start-up.
LD10706a
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