AD-FM 255 GVD, AD-FM 255 GVD-O

Description

The frequency measuring converter AD-FM 255 GVD supplies an initiator or a contact and transforms its impulse sequence to a proportional impressed analogue signal. The output signal is independent from the connected load up to a maximum value. All measuring ranges and outputs can be freely parameterized. This can be carried out via the optional operating panel AD-VarioControl or via the programming software AD-Studio. Input, output and the supply voltage are separated from each other galvanically with high isolation.

Application

The main area of application is the through-flow measuring at water meters, further applications are energy consumption measuring etc.

Specific characteristics

Inputs: NAMUR, contact, open collector, 3-conductor Opto, 24V activ
Outputs: current and voltage
Digital output: Relay or semiconductor (pulse or limit value function)
Operating module VarioControl as an accessory
Programming via configuration software

Business data

Order number
AD-FM 255 GVD	Relay output
AD-FM 255 GVD-O	Semiconductor output
Accessory (optional)
Operating module	AD-VarioControl
USB programming adapter	AD-VarioPass /AD-Studio
Identifiers
EClass	27210128
Customs tariff number / country of origin	8543 70 90 / Deutschland

Information

Downloads
Data sheet	en-fm255gvd.pdf (342 kB)
Tender text	fm255gvd.zip (10 kB)
Operation manual VarioControl	man-variocontrol-ad-en.pdf (1 MB)
STEP file	gvd+variocontrol.zip (2 MB)
Safety instructions	ad-safety-instructions.pdf (43 kB)

Technical specifications

Digital input
Input	NAMUR (EN 60947-5-6), reed contact, open-collector, 3-lead opto-transmitteror 24V active
Input frequency	Min. 0 ... 10 mHz; max. 0 ... 10 kHz
Frequency generator supply	Active: 8V / 8mA
Kontaktentprellung (activatable)	40 ms
Output current
Output range	0 ... 20 mA
Max. burden	400 Ohm
Residual ripple	< 50 µAss
Output voltage
Output range	0 ... 10 V
Min. burden	10 kOhm
Residual ripple	<20 µVss
Accuracy
Unit	<0,3%
Temperature influence	<100 ppm / K
Response time	Approx. 70 ms
Relay output
Contact type	Potential-free changeover
Max. AC-breaking capacity	250 V AC, 2 A AC, 50Hz
Max. DC-breaking capacity	50 V DC, 2 A DC
Switching operations
Mechanical	10⁷
AC: 230V / 2A, cos(phi)=1	6 * 10⁵
AC: 230V / 2A, cos(phi)=0,4	2 * 10⁵
DC: 24V / 1A	2 * 10⁵
Semiconductor output (optional)
Max switching voltage	30 V DC
Max. switching current	50 mA DC
Voltage drop	< 1 V
Supply
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
Power consumption AC / DC	3,7 VA / 2,1 W
Housing
Dimensions (WxHxD)	23x110x134 mm
With operating module (bxhxt)	23x110x138 mm
Type of protection	IP 20
Connection method	Detachable terminal clamp
Terminals, wire cross section	2,5 mm² flex wire / 4 mm² one wire
Bolting torque terminals	0,5 Nm
Weight	~ 140 g
Manner of fastening	35 mm DIN rail 35mm
Environmental conditions
Ambient temperature	-10 ... 50 °C
Storage and transport	-10 ... 70 °C (no condensation)
EMC
Product family standard ¹⁾	EN 61326-1
Emitted interference	EN 55011, CISPR11 Cl. B, Gr. 1
	In a critical EMC environment, shielded encoder cables are recommended.
¹⁾During electromagnetic disturbance minor changes in output signal are possible.
Electrical safety requirements
Product family standard	EN 61010-1
Overvoltage category	II
Pollution degree	2
Galvanic isolation, test voltages
Input/output	2 kV RMS (1 min.)
Signal/auxiliary voltage	3 kV RMS (1 min.)

Block and wiring diagram

AD-FM 255 GVD, AD-FM 255 GVD-O

Dimensions

AD-FM 255 GVD, AD-FM 255 GVD-O