Thermal Care Accuchiller EQ Series, Руководство по установке и эксплуатации

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Table 10 – Diagnostic Error Codes (continued)
Error
Code
Description Cause/Corrective Action
127 Compressor overload on chiller
Indicates the internal compressor motor winding thermostat or the external
compressor motor overload has tripped. This fault also shuts off the pump. The
internal compressor motor winding thermostat automatically resets when the
temperature drops back into the normal operating range. The external
compressor motor overload requires a manually reset. The compressor motor
overload is located inside the electrical enclosure. Once the internal compressor
motor winding thermostat resets and/or the external compressor motor
overload resets, press the Alarm Reset button to reset the fault.
128 Chiller high temperature safety
Indicates the chiller has shut off due to the high temperature safety. This safety
shuts off both the pump and compressor. This safety occurs if the To Process
temperature rises more than 10°F above the maximum operating temperature
noted on the chiller nameplate. The To Process temperature must be over the
limit for three minutes before this safety occurs, and the fault is defeated for a
period of thirty minutes from the time the Start button is pressed or the Set
Point temperature is changed. Pressing the Alarm Reset button will reset this
fault.
129 Input Contact Chatter Indicated there is chatter on the input contact.
SPI Communications Option
Several members of SPI: The Plastics Industry Trade
Association defined a communications standard for
various pieces of plastic processing equipment to
communicate. They chose to adopt the Serial
Peripheral Interface bus (SPI bus) which coincidently
has the same abbreviation as the trade association.
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.
Units ordered with this option will have this feature
activated at the factory. If for some reason this
feature is deactivated the DIP switch setting may
need to be adjusted.
When the SPI option is purchased, there is a second
set of DIP switches included on the back of the main
control panel. This set of DIP switches is labeled
"COMM". All DIP switch adjustments that follow are
to be made on the COMM set. Do not adjust any DIP
switches on the CONFIG set.
Note: All DIP switch changes must be made with power
disconnected.
In order to activate the SPI protocol, DIP switch #8
must be set to the "On" position. To deactivate the
SPI communication, set DIP switch #8 to the "Off"
position.
If more than one piece of equipment is going to be
on the same communications network, each unit
must have a unique address. To change the unit
address change one or more of the DIP switches to
the "Off" position. The base address is 32 decimal.
Changing these switches causes the following
address change.
Table 11 - SPI Baud Rate Adjustment
BAUD Rate DIP Switch #6 DIP Switch #7
1200 ON ON
2400 OFF ON
4800 ON OFF
9600 OFF OFF
DIP Switch 1 OFF adds one to base address
DIP Switch 2 OFF adds two to base address
DIP Switch 3 OFF adds four to base address
DIP Switch 4 OFF adds eight to base address
DIP Switch 5 OFF adds sixteen to base address
The BAUD rate is adjustable by using the information
found in Table 11.