23
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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)
_______________________________________________________
Allowable signal
Thermocouple: 100
Ω
or less
source resistance
Voltage: 1K
Ω
or less
_______________________________________________________
Allowable wiring
RTD: 10
Ω
or less per wire
resistance
_______________________________________________________
Reference junction
±1°C (at 23°C)
compensation accuracy
_______________________________________________________
Process variable offset
±10% FS
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Setpoint variable offset
±50% FS
_______________________________________________________
Input filter
0-900.0 sec, setting in 0.1 sec steps
(primary lagging filter)
_______________________________________________________
Noise rejection ratio
Normal mode noise (50/60Hz): 50dB or more
Common mode noise (50/60Hz): 140dB or more
_______________________________________________________
POWER FAILURE PROTECTION
_______________________________________________________
Memory protection:
Non-volatile memory. Parameter values
remain unchanged with disruption of power.
Ramp/soak function has to be re-initiated.
_______________________________________________________
Summary of Contents for CN4321
Page 33: ...32 SYSTEM WIRING DIAGRAMS Example 1 Example 2...
Page 45: ...44 Deadband Overlap...
Page 48: ...47 Table of Input Type Codes...
Page 50: ...49...
Page 53: ...52 Table of Alarm Action Type Codes CN4321...
Page 54: ...53 Table of Alarm Action Type Codes CN4431...
Page 59: ...58 Table of Output Type Codes...