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2231
 
 

2231

 

Trip amplifier

 

  • AC/DC trip amplifier
  • 2 adjustable alarm limits
  • Galvanically isolated 3.75 kVAC
  • Front-programmable
  • 3-digit LED display
  • 24 VDC or universal supply
  1. Overview +

  2. Technical details +

  3. Accessories +


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

Operating temperature -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

Supply voltage 19.2...28.8 VDC
Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC
Internal power dissipation 1.5 W (2231D) 2 W (2231P)

Isolation voltage

Isolation voltage, test / working 3.75 kVAC / 250 VAC
PELV/SELV IEC 61140

Response time

Response time (programmable) 0.25...60 s (DC) 0.75...60 s (AC)
Updating time 100 ms
Accuracy Better than 0.1% of sel. 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

Common input specifications

Max. offset 50% of selected max. value

Current input

Measurement range 0...20 mA
Min. measurement range (span) 10 mA
Input resistance 50 Ω

AC current input

Measurement range 0...1 ARMS
Min. measurement range (span) 0.5 ARMS
Input resistance 1 Ω / 2 W

Voltage input

Measurement range 0...250 VDC
Min. measurement range (span) 0.5 VDC
Input resistance Nom. 5 MΩ

AC voltage input

AC voltage input 0...250 VRMS
Min. measurement range (span) 0.5 VRMS
Input resistance Nom. 5 MΩ

Output specifications

Relay output

Hysteresis 0...99.9% of span
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

Common output specifications

Updating time 100 ms
Relay outputs: Setpoint setting 0...99.9% of span
of span = of the presently selected range

Observed authority requirements

EMC 2014/30/EU
LVD 2014/35/EU
EAC TR-CU 020/2011
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