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12
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Status display
Control output, alarm output, heater burnout
alarm output (on CN4520, 4620 and 4720 only).
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Indication accuracy
Thermocouple: ±0.5% FS ±1 digit ±1°C
(at 23°C)
R thermocouple: 0-400°C; ±1% FS ±1 digit ±1°C
B thermocouple: 0-500°C; ±5% FS ±1 digit ±1°C
RTD, voltage, current: ±0.5% FS ±1 digit
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GENERAL SPECIFICATIONS
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Rated voltage
85-264V AC, 50/60 Hz, or 24V AC/DC ±10%
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Power consumption
10VA or less (100V AC)
15VA or less (240V AC)
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Insulation resistance
50M
Ω
or more (500V DC)
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Withstand voltage
Power source-Earth: 1500V AC, 1 min
Power source-input terminal: 1500V AC, 1 min
Earth-relay output: 1500V AC, 1 min
Earth-Alarm output: 1500V AC, 1 min
Between other terminals: 500V AC, 1 min
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Input impedance
Thermocouple: 1M
Ω
or more
Voltage: 450K
Ω
or more
Current: 250
Ω
(external resistor)
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Allowable signal
Thermocouple: 100
Ω
or less
source resistance
Voltage: 1K
Ω
or less
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Allowable wiring
RTD: 10
Ω
or less per wire
resistance
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Reference junction
±1°C (at 23°C)
compensation accuracy
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