AD-AAB 20 GX

Description

The AD-AAB 20 GX provides 2-channel output of analog signals. The device communication is realized using the MODBUS RTU protocol. The analog setpoints can be set via implemented MODBUS commands.
The power supply and the RS485 bus connection are possible via the rear DIN rail connector. The device is equipped with two rotary coding switches with which the bus address can be set on the device.
The operating voltage is indicated by a green LED. The data communication is signaled with a yellow LED. An optical search function allows the localization of a single device in a network. For this purpose, the green LED is set in a time-limited flashing mode, between 1 and 255 seconds.
As well as interface settings as well as the device address can be modified during operation by means of Modbus commands. All Modbus register addresses and associated commands are listed in the document attachment.

AD-AAB 20 GX

Application

Specification of analog process signals for control purposes.

Specific characteristics

Two analogue outputs can be used as voltage or current input
Galvanically isolated RS485 bus interface
Parameterizable interface settings
Hardware switch for device address
Galvanically isolated switching power supply
Can be parameterized with PC via AD Studio configuration software
Status LED for operating voltage and data communication
Optical search function
Modbus master mode

Business data

Order number
AD-AAB 20 GX
Accessory
Rail connector (5-pin)	Artnr: AD-GX-Connector Zur Durchschleifung von Versorgungsspannung und RS485-Bus Aufrastbar auf Tragschiene (DIN EN 50022).
Identifiers
Customs tariff number / country of origin	8543 70 90 / Deutschland

Information

Downloads
Data sheet	en-aab20gx.pdf (214 kB)
Tender text	aab20gx.zip (10 kB)
STEP file	gx.step (3 MB)
Safety instructions	ad-safety-instructions.pdf (43 kB)

Technical specifications

Current outputs
Range	0 ... 20 mA
Output load	Max. 450 Ohm
Voltage outputs
Range	0 ... 10 V
Output load	Min. 10 kOhm
Signal output
Channel counts (U/I)	2
Basic accuracy	< +/- 0,3 %
Temperature influence	80 ppm/K
Resolution	12 bit
Transmission behaviour
Response time	Max. 15 ms
RS485-Bus
Software protocol	Modbus-RTU
Data format	19200, e, 8, 1
Max. bus users	99
Bus termination	120 ohms both sides at the end
Max. length of bus	500 m (no spur lines)
Cable	Twisted and shielded
Supply
Supply voltage	18 ... 30 V DC
Max. power consumption	1400 mW (24V DC)
Housing
Dimensions (WxHxD)	6,2 x 92 x 101 mm³
Manner of fastening	DIN rail mounting 35mm, EN 50022
Type of protection	IP 20
Connection method	Screw clamp
Bolting torque terminals	0,5 Nm
Wire cross section	Max. 2,5 mm²
Weight	~ 70 g
Environmental conditions
Permissible ambient temperature	-10 ... +50 °C
Storage and transport	-10 ... +70 °C (no condensation)
EMC
Product family standard ¹⁾	EN 61326-1
Emission ²⁾	EN 55011, CISPR11 Cl. A, Gr. 1
¹⁾ During checking, slight signal deviations are possible.
²⁾ Warning: This device is not intended to be used in residential areas and can not ensure adequate protection of radio reception in such environments.
Electrical safety requirements
Product family standard	EN 61010-1
Galvanic isolation, test voltages
RS485 bus / power supply	1,5 kV, 50 Hz (1 min)
Analog output / power supply	1.5 kV, 50 Hz (1 min)
Analog output / RS485 bus	1,5 kV, 50 Hz (1 min)
Analog outputs between themselves	0,5 kV, 50 Hz (1 min)
Protection circuits
Power supply	Electrical surge and reverse current protection

Block and wiring diagram

AD-AAB 20 GX

Dimensions

AD-AAB 20 GX