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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.

Manuals

Data sheet

Russian manual

DNV marine certificate

EAC declaration

Metrology Pattern Approval (MPA)

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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