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Technical Data
Features
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Control Types
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Full PID with Pre-tune, Self-tune, manual tuning, or On-Off control. Heat only or heat & cool
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Auto/Manual
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Selectable from front panel or via digital input, with bumpless transfer
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Output Configuration
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Up to 3 possible, for control, alarm, 24VDC transmitter power supply or retransmit of process value or setpoint
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Alarm 1 & 2 Types
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Process high, process low, SP deviation, band, logical OR / AND. Also 1 loop alarm for process control security. Process alarms have adjustable hysteresis.
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Human Interface
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4 button operation, dual 4 digit 10mm & 8mm high LED displays, optional choice of colours (Red/Red, Red/Green, Green/Red or Green/Green), plus 5 LED indicators
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PC Configuration
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Off-line configuration from PC serial port to dedicated config socket (comms option not required). Configuration Software for Windows 98 or higher. West Part Number: PS1-CON
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Input
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Thermocouple
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J, K, C, R, S, T, B, L, N & PtRh20%vsPtRh40%.
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RTD
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3 Wire PT100, 50Ω per lead maximum (balanced)
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DC Linear
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0 to 20mA, 4 to 20mA, 0 to 50mV, 10 to 50mV, 0 to 5V, 1 to 5V, 0 to 10V, 2 to 10V.
Scaleable -1999 to 9999, with adjustable decimal point
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Impedance
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>10MΩ for Thermocouple and mV ranges, 47KΩ for V ranges and 5Ω for mA ranges
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Accuracy
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±0.1% of input range ±1 LSD (T/C CJC better than 1°C)
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Sampling
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4 per second, 14 bit resolution approximately
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Sensor Break Detection
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<2 seconds (except zero based DC ranges), control O/P’s turn off, high alarms activate for T/C and mV ranges, low alarms activate for RTD, mA or V ranges
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Outputs & Options
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Control & Alarm Relays
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Contacts SPDT 2 Amp resistive at 240V AC, >500,000 operations
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Control SSR Driver Outputs
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Drive capability >10V DC in 500Ω minimum
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Triac Outputs
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0.01 to 1 Amp AC, 20 to 280Vrms, 47 to 63Hz
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DC Linear Outputs
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0 to 20mA, 4 to 20mA into 500Ω max, 0 to 10V, 2 to 10V, 0 to 5V into 500Ω min.
Control outputs have 2% over/under drive applied. Accuracy ±0.25% at 250Ω (degrades linearly to 0.5% for increasing burden to specified limits)
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Transmitter Power Supply
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Output 24VDC (nominal) into 910Ω minimum to power external devices
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Communications
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2 Wire RS485, 1200 to 19200 Baud, Modbus and ASCII protocol (selectable)
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Digital Input
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Selects between 2 setpoints or Auto/Manual control. Volt free or TTL input
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Remote Setpoint Input
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0 to 20mA, 4 to 20mA, 0 to 5V, 1 to 5V, 0 to 10V or 2 to 10V.Scaleable -1999 to 9999. Local/Remote setpoint selected from front panel
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Operating & Environmental
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Temperature & RH
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0 to 55°C (-20 to 80°C storage), 20% to 95% RH non-condensing
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Power Supply
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100 to 240V 50/60Hz 7.5VA (optional 20 to 48V AC 7.5VA/22 to 65V DC 5 watts)
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Front Panel Protection
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IEC IP66 (Behind panel protection is IP20)
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Standards
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CE, UL & ULC recognised
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