Emerson Vilter Vission 20/20 Operation And Service Manual page 206

Section 26 • Remote Oil Cooler
Overview
This screen allows the operator to view and adjust
Remote Oil Cooler setpoint settings associated with
Remote Oil Cooler operation, see Figure 26-1. This
screen will only be active if the Remote Oil Cooler Control
option has been enabled from the Configuration Screen,
see Section 19.
The Remote Oil Cooler Control operation allows the cy-
cling of fans and pumps in order to maintain a specific
Remote Oil Cooler Temperature. The five different steps
in step control allow the selection of fans, pumps and
VFD in one or more steps. When a VFD is employed,
the VFD is allowed to reach maximum speed, then if
additional capacity is needed, the next fan or pump
is brought on. The VFD will modulate down and then
back up to 100% again, then the next fan or pump is
brought on. This method allows the smoothest Remote
Oil Cooler control by spacing the VFD between the fan
and pump steps, while maintaining a Remote Oil Cooler
Temperature pressure that matches the setpoint.
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
Figure 26-1. Remote Oil Cooler Screen (Page 1)
Remote Oil Cooler Setpoint
Run Mode:
• Run Mode allows the selection of different modes of
operation for Remote Oil Cooler. The choices for se-
lection are:
Run Never:
The mode of operation by default. Remote Oil
Cooler operation will not be performed when
this mode is active.
Run With Comp:
Automatic operation of Remote Oil Cooler
selected when cooling control is required to
only run when the compressor is running.
Run Always:
Automatic operation of Remote Oil Cooler
selected when cooling control is required to
run even when the compressor is off.
26 – 1