5> Alarm And Communication Output - S&A CWFL-3000 User Manual

Ultra-low water level
E19
alarm
Exhaust temp. sensor
E20
failure alarm
Ultra-high exhaust
E21
temp. alarm
<5> Alarm and communication output
For ensuring the equipment will not be damaged when abnormal condition occurs
in the chiller, it has alarm protection function.
1. Alarm and MODBUS RS-485 communication output wiring diagram.
2. Working condition table of alarm signal
Unit condition
Working normally
E00、E01、E08、E09、
E10、E12、E13、E15
E02、 E03、 E11、 E14、 E16、
E17、E18、E20、E21
E04、E05、E06、E07
E19
Note: The flow alarm is connected to the normally open relay and normally closed relay
contacts, requiring operating current less than 5A, working voltage less than 300V.
The unit runs normally under set
E19 shown with values; the water pump, compressor,
alarm sound condenser fans and heater of the
high/low temp. system shut down
E20 shown with Each refrigeration part runs under
alarm sound
E21 shown with Each refrigeration part runs under
alarm sound
Built-in buzzer of
temp. controller
No Sound Disconnection
Sounds Breakover
Sounds Disconnection
Sounds Breakover
Sounds Breakover
11
CWFL-3000/4000/6000 Series
usual procedures
usual procedures
OUT OUT
H1、H2 H1、H3
Breakover
Disconnection
Breakover
Disconnection
Disconnection
Automatic clearing
Automatic clearing
Automatic clearing
ILUS
Optional
Activate after output
terminal delaying