11
OUTPUT
(Dual Output) CN4522, CN4622, CN4722 only
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Control output
For dual output type, one of the following three
types is selected on both heating and cooling types:
(Not available on CN4420)
(1) Relay contact (SPDT):
220V AC/30V DC, 3A (resistive load)
(2) DC SSR driver (voltage pulse):
15-30V DC at ON/0.5V DC or less at OFF.
Current: 60mA or less
(3) 4-20mA DC:
Allowable load resistance – 600
Ω
or less
(Note: When DC SSR driver output for heating/
cooling side is selected, the total current should
be less than 60mA)
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ALARM
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Alarm output
Relay contact (SPST),
220V AC/30V DC, 1A (resistive load)
CN4420: 1 point, Other types: 2 points
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Heater burnout
Relay contact (SPST),
alarm output
220V AC/30V DC, 1A (resistive load)
Not available on CN4420
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SETTING AND INDICATION
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Parameter setting method Digital setting with eight keys
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PV/SV display method
CN4420: PV/SV red display, 4 digits
CN4520, CN4720, CN4620: Dual display for PV/SV
4 digits each, PV= red, SV= green
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