RKC thermostat CH402

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DESCRIPTION

RKC Temperature Control Meter Product Description
Input
a) Thermocouples (TC): K, J, E, T, R, S, B, U, L, N, PL2, W5Re/w26Re
b) Thermistor (RTD): Pt100 JPT100
c) DC input: DC0~5V, DC1~5V, DC0~20mA *, DC4~20mA*
*An indirect 250W resistor is required at the input terminal
Input display accuracy: (0.3%+1 digit of the set value SV)
Input Range: Refer to the Input Range Table
Sampling period: 0.5sec
Process value bias -1999~9999 ℃ [° F] or -1999~999.9 ℃ [° F] (temperature input)
± Full range (voltage/current input)
RKC temperature control meter setting range
a) Set value (SV): Equivalent temperature range value
b) Heating side proportional band (P): 1- range or 0.1- range (temperature input) * 1 0.1-100.0% of range (voltage input)
c) Cooling side ratio band (Pc): 1-1000% of the heating side ratio
d) Integral time (I): 1-3600sec * 2
e) Differential time (D): 1-3600sec * 3
f) Limit the effective range of integral action (ARW): 1-100% * 4 of the proportional band
g) Heating side proportional cycle 1-100sec * 5
h) Refrigeration side proportional cycle 1-100sec * 6
i) Non sensitive zone: -10-10 or -10.0-+10.0 ℃ [° F] (temperature input)
Range of -10.0 to+10.0% (voltage/current input) * 7
*If the proportional band is set to 0 ℃ [° F], it is considered an ON-OFF action
*If the integration time is set to 0 seconds, it becomes a PD action
*If the differential time is set to 0 seconds, it becomes a PI action
*If the effective range of the integral action is set to 0%, the D action will be turned off
*5. No need to set cycle for current output
*6. No need to set cycle for current output
*If the neutral band is set to negative, it will overlap

Control action
PID control (ON-OFF, P, PI, PD control)
a) Automatic Calculation Function (AT)
① Self adjustment method: limited period method
② AT cycle: 1.5
b) When the autonomous calibration setting is changed, autonomous calibration is established
*Excluding heating/cooling PID control actions
Control output
a) Relay contact output: 250VAC 3A (with load) 1a connection
*Electrical: Over 300000 cycles, rated load
b) Voltage pulse output: 0-12VDC (load resistance: over 600 Ω)
c) Current output: 4-20mADC (load resistance: below 600 Ω)
d) Trigger output for thyristor drive: Capacity drive in zero measurement method
e) Thyristor control tube output: rated 0.5A (ambient temperature below 40 ℃)
Temperature alarm
Alarm point: Dual alarm (set separately)
Alarm type: Deviation alarm (upper limit, lower limit, upper and lower limits, within range)
Process value input alarm (upper limit, lower limit)
Set value alarm (upper limit, lower limit)
*You can choose standby function (except for setting value alarm)
Control loop disconnection alarm (LBA)
LBA setting time: 0.1-200.0min
*Cannot be set to 0.0min
LBA insensitive band: 0-9999 ℃ [° F] (temperature input)
0-range (voltage/current input)
*If set to 0, LBA does not act.
Heater disconnection alarm (HBA)
Input: Output of current detector
(RKC designated models CTL-6-P-N, CTL-12-S 56-10L-N)
Scope of application: CTL-6-P-N 0-30A CTL-12-S56-10L-N: 0-100A
Alarm output
Relay contact output, 250VAC 1A (with load) 1a connection
*Connect and disconnect more than 50000 times.
*The control loop disconnection alarm output needs to be selected between ALM1 or ALM2.
*When the control loop disconnection alarm is selected, another alarm cannot be set to LBA.
Communication Function (SCI)
Interface standard: EIA RS-485
Communication Protocol: ANSI X3.28 (1976) 2.5 A4
Communication method: 2-wire semi bidirectional multi station connection
Synchronization method: Start/Stop synchronization
Communication speed: 24004800960019200BPS
Starting digit: 1
Data digits: 7 or 8
Check parity: present or absent. When "present": odd or even
Stop digit: 1 or 2
Maximum number of connection points: 32 points (address set from 0-99)
Other
Power outage impact: No impact if the electronic meter is disconnected for 20ms or less
*Power off for more than 20ms, return to initial state
Data protection during power outages: Non disappearing memory elements support data
Surrounding temperature: 0-50 ℃ [32-122 ° F]
Surrounding humidity: 45-85% RH
Installation: Embedded disk installation