Advanced features
- The front-operated push buttons are used for programming the different standard functions.
- A password can prevent access for changing parameters.
Application
- Alarm detector in connection with measurement of AC/DC current or voltage signals.
- The unit is used where accurate setpoint setting and different alarm functions are required.
- The unit can be used as a single or dual trip amplifier.
- Used in applications where programmable parameters such as hysteresis, setpoint, reset, active relay for increasing or decreasing signal, delay and input signal need to be set.
Technical characteristics
- 3-digit display showing the input signal in %.
- Two LED indicating relay status.
- 3 pushbuttons for programming.
- Standard DC current input signals in the range 0...20 mA.
- DC voltage signals in the range 0...250 VDC.
- AC current signals up to 1 A.
- True RMS measurement of AC voltage signals in the range 0...250 VAC.
- Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.
Environmental Conditions
Specifications range -20°C to +60°C Calibration temperature 20...28°C Relative humidity < 95% RH (non-cond.) Protection degree IP50 Mechanical specifications
Dimensions (HxWxD) 80.5 x 35.5 x 84.5 mm (D is without pins) Weight DC / universally supplied 125 g / 175 g Common specifications
Supply voltage 19.2...28.8 VDC Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC Internal consumption 1.5 W (2231D) 2 W (2231P) Isolation voltage, test / working 3.75 kVAC / 250 VAC Response time (programmable) 0.25...60 s (DC) 0.75...60 s (AC) Updating time 100 ms Accuracy Better than 0.1% of selected range Signal dynamics, input 16 bit Effect of supply voltage change < ±0.002% of span / %V Temperature coefficient < ±0.01% of span /°C (DC signals) < ±0.02% of span /°C (AC signals) Linearity error < 0.1% of span < ±0.35% of span 50...1000 Hz (AC sine wave signals) EMC immunity influence < ±0.5% Input specifications
Max. offset 50% of selected max. value Current input: Measurement range 0...20 mA Min. measurement range (span), current input 10 mA Input resistance, current input 50 Ω AC current input: Measurement range 0...1 ARMS Min. measurement range (span), AC current 0.5 ARMS Input resistance, AC current 1 Ω / 2 W Voltage input: Measurement range 0...250 VDC Min. measurement range (span), voltage input 0.5 VDC Input resistance, voltage input Nom. 5 MΩ AC voltage input: Measurement range 0...250 VRMS Min. measurement range (span), AC voltage 0.5 VRMS Input resistance, AC voltage Nom. 5 MΩ Output specifications
Relay outputs: Setpoint setting 0...99.9% of span Hysteresis 0...99.9% of span Updating time 100 ms ON and OFF delay 0.0...99.9 s Max. voltage 250 VRMS Max. current 2 AAC Max. AC power 500 VA Max. load at 24 VDC 1 A *of span = of the presently selected range Approvals
EMC EN 61326-1 LVD 2006/95/EC EN 61010-1 PELV/SELV IEC 364-4-41 and EN 60742 EAC TR-CU 020/2011 EN 61326-1