Spi Communications (Optional); Table 12 – Controller Control Fault Logic - Conair EP2 series User Manual

Table 12 – Controller Control Fault Logic
Fault
1
Low Reservoir Level
Temperature Limit Safety
Temperature Limit Warning
Pump Motor Overload
Compressor Motor Overload
High Refrigerant Pressure
Low Refrigerant Pressure
Low Evaporator Temperature
Supply Probe Fault Hi
Supply Probe Fault Lo
Return Probe Fault Hi
Return Probe Fault Lo
Freezestat Probe Fault Hi
Freezestat Probe Fault Lo
Brownout
3-Phase Power Error
Low Flow
Activates the alarm horn (optional) and closes the alarm contact (optional) if these options have been purchased.
1
Alarm Silence/Reset button on control panel must be pressed.
2
Safety control device must be manually reset before the controller can be reset.
3

SPI Communications (Optional)

Several years ago, a number of members of The
Plastics Industry Association developed a standard
for various pieces of plastic processing equipment to
communicate. They chose to adopt the Serial
Peripheral Interface bus (SPI bus). To allow our unit
to operate as a slave unit in a plastic processing
system using this protocol, we offer an option that
includes an expansion module for the control board
and a RS-485 communication port on the unit. The
communication hardware firmware is SPI 3.01
standard compliant.
Alarm Indication
Reservoir Level Light flashes red
Set Point and Process Displays Flash, Temperature
Limit Light flashes red
Temperature Limit Light flashes yellow
Pump Light flashes red
Compressor Light flashes red
High Refrig Pressure Light flashes red
Low Refrig Pressure Light flashes red
Freezestat Light flashes red
Set Point Display shows
PRS
E Hi
Set Point Display shows
PRS
E L o
Set Point Display shows PRR, Process Display shows
E Hi
Set Point Display shows PRR, Process Display shows
E L o
Set Point Display shows
PRF
E Hi
Set Point Display shows
PRF
E L o
Set Point Display shows n, Process Display shows
Br
Out
Electrical Phase Error list flashes red
Low Flow Light flashes red
, Process Display shows
, Process Display shows
, Process Display shows
, Process Display shows
Units ordered with this option will have this feature
activated at the factory. Use the program menu
Communication Type function as shown in Table 11
to activate or deactivate this feature. In addition to
activating the communication type a baud rate and
SPI address must be set. These are set using the
Communication Baud Rate and SPI Address
functions as shown in Table 13.
If multiple pieces of equipment are going to be on
the same SPI communications network, the base
addresses of each machine has to be unique. The
communication baud rate may also need
adjustment.
17
Component Shut-Off
Pump Compressor
Yes Yes
Yes Yes
No No
Yes Yes
No Yes
No Yes
No Yes
No Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Required Resets
Panel Sensor
2 3
Yes Yes
Yes No
Yes No
Yes Yes
Yes No
Yes Yes
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
No No