Dwyer SCZ10 - Manual (Page 17)

Input Thermocouple: K, J, R, S, E, T, N, PL-II, C (W/Re5-26) External resistance: 100
Ω or less
B thermocouple: External resistance: 40
Ω or less
RTD : Pt100, JPt100 3-wire system
Allowable input wire resistance (10
Ω or less per wire)
DC current : 0 to 20mAdc, 4 to 20mA input impedance 50
Ω
[Connect 50
Ω shunt resistor (sold separately) between input terminal (5) and (6).]
Allowable input current: 50mA or less
DC voltage : 0 to 1Vdc
Input impedance: 1M
Ω or greater
Allowable input voltage: 5V or less
Allowable signal source resistance
: 2k
Ω or less
Accuracy (Indicating • Setting)
Thermocouple input: Within ±0.2% of input span ±1 digit or ±2°C (4°F) whichever is greater.
R, S input 0 to 200°C (0 to 400°F): Within ±6°C (2°F).
B input 0 to 300°C (0 to 600°F): Accuracy is not guaranteed.
RTD input: Within ±0.1% of input span ±1 digit or within ±1°C (2°F) whichever is greater.
DC voltage input : Within ±0.2% of input span ±1 digit
DC current input : Within ±0.2% of input span ±1 digit
Input sampling period : 0.25 seconds
Control Control action
• PID action (with auto-tuning function)
• PI action : When derivative time is set to 0
• PD action (with manual reset function): When integral time is set to 0
• P action (with manual reset function) : When derivative and integral time are set to 0
• ON/OFF action : When proportional band is set to 0
Proportional band: 0.0 to 110.0% [Factory adjusted as 2.5%]
(ON/OFF action when set to 0.0)
Integral time : 0 to 1000 seconds (Off when set to 0) [Factory adjusted as 200 seconds]
Derivative time : 0 to 300 seconds (Off when set to 0)[Factory adjusted as 50 seconds]
Proportional cycle : 1 to 120 seconds [Factory adjusted as Relay: 3/ sec.; SS: 3 sec.]
ARW : 0 to 100% [Factory adjusted as 50%]
Manual reset : ±Proportional band converted value [Factory adjusted as 0.0]
Output limit : 0 to 100% (DC current output type: -5 to 105%)
(Not available for ON/OFF action)
[Factory adjusted as control output low limit setting value 0%
control output high limit setting value100%]
Hysteresis : Thermocouple and RTD input: 0.1 to 100.0°C (°F)
[Factory adjusted as 1.0°C]
DC voltage and current input: 1 to 1000
(Decimal point place follows the selection.)
[Factory adjusted as 10]
Control output (OUT)
• Relay contact : Control capacity 250Vac 3A (Resistive load)
250Vac 1A (Inductive load COS
φ = 0.4)
Electric life 100,000 cycles
• Non-contact voltage (for SSR drive): 12
--
--
Vdc Max. 40mA (Short-circuit protected)
• DC current : 4 to 20mAdc, Load resistance: Max. 550
Ω
Output accuracy: Within ±0.3% of output span
Resolution
: 12000
Alarm Alarm (EVT) output (Common output with Loop break alarm, Heater burnout
alarm [optional])
When input exceeds the range in ± deviation setting (excluding Process alarm) to the main
setting, alarm (EVT) turns ON or OFF (High/Low limit range alarm), and when Deenergized
is selected in Energized/Deenergized selection, alarm (EVT) is activated conversely.