AD-AS 320 GS


The analogue memory AD-AS 320 GS serves the galvanic separation, conversion and amplification of DC current signals and voltage signals (0/4-20mA or 0/2-10V). The device can save an analogue value over an unlimited period. With an active control signal (24V active or contact), the output signal follows the input signal. If the control signal is deactivated, the instantaneous output signal remains saved. The saved value is also restored after a supply voltage failure. Alternatively, the analogue value can also be taken over to the output by pressing the memory key briefly. An activation of zero trimmer and full trimmer is possible by pressing the memory key for longer (only in signal sequence mode). With this, the signal dimensions can be adjusted at the front in the range of ±25%.

AD-AS 320 GS


Conversion, burden amplification and galvanic disconnection of impressed transmitter signals, current signals and voltage signals with additional memory function for maintenance work.

Specific characteristics

  • The device has additionally a transmitter supply available.
  • Restoration of the last device condition (power cut).
  • Feedback contact with memory condition (closer).
  • Configurable via AD-STUDIO.

Business data

Order number
AD-AS 320 GS
Customs tariff number / country of origin 8543 70 90 / Deutschland


Data sheet pdf en-as320gs.pdf (210 kB)
Safety instructions pdf ad-safety-instructions.pdf (43 kB)

Technical specifications

Transmitter supply
Feeding voltage 26 ... 19 V (4 ... 20 mA)
Current limit ~ 25 mA
Input current
Measuring range 0 ... 20 mA 1)
Input resistance 50 Ohm
Input voltage
Measuring range 0 ... 10 V 1)
Input resistance 100 kOhm (10 kOhm / Volt)
Output current
Output range 0 ... 20 mA 1)
Max. burden 500 Ohm
Max. residual ripple 40 µAss
Output voltage
Output range 0 ... 10 V 1)
Min. burden 1 kOhm
Max. residual ripple 20 mVss
Voltage range AC 50 ... 253 V AC, 50/60 Hz
Nominal voltage AC 230 V AC
Voltage range DC 20 ... 253 V DC
Nominal voltage DC 24 V DC
Input power AC/DC 3,5 VA / 2,0 W
Transmission behaviour
Basic accuracy < 0,2 %
Temperature influence 100 ppm/K
Response time 50 ms
Damping (optional) 0,3 %/s (linear max. ~300 s)
Trimmer function +/- 25%
Linearization (optional) 24 Punkte, interpoliert
Remote control
Input Optokoppler
Voltage 10 ... 30 V DC
Pulse controlled 200 ... 1000 ms
Static > 1000 ms
Front button ~ 200 ms
Dimensions (WxHxD) 23x78x103 mm
Type of protection IP 20
Connection method Screw clamp
Terminals, wire cross section 2,5 mm² flex wire / 4 mm² one wire
Bolting torque terminals 0,5 Nm
Weight ~ 100 g
Manner of fastening 35 mm DIN rail 35mm
Environmental conditions
Ambient temperature -10 ... 50 °C
Storage and transport -10 ... 70 °C (no condensation)
Product family standard EN 61326-1 2)
Emitted interference EN 55011, CISPR11 Cl. B, Gr. 1
Electrical safety requirements
Product family standard EN 61010-1
Overvoltage category II
Pollution degree 2
Galvanic isolation, test voltages
Input / output 1,5 kV, 50 Hz (1 min.)
Signal / supply unit 3 kV, 50 Hz (1 min.)
Protection circuits
Input Electrical surge protection
Output Electrical surge protection
Power supply Protection against overvoltage
reverse polarity
1) Values must be adviced by order.
2) During checking, slight signal deviations are possible.

Block and wiring diagram

AD-AS 320 GS


AD-AS 320 GS

CAD / CAE Daten

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