Barrier

Product details



SMART current driver - 12.5mm

This isolated barrier is used for intrinsic safety applications. It drives SMART I/P converters, electrical valves, and positioners in hazardous areas.

Digital signals are superimposed on the analog values at the field or control side and are transferred bi-directionally.

Current transferred across the DC/DC converter is repeated at terminals 1 and 2.

An open field circuit presents a high input impedance to the control side to allow lead breakage monitoring by control system.

If the loop resistance for the digital communication is too low, an internal resistor of 250Ω between terminals 6 and 8 is available, which may be used as the HART communication resistor.

Sockets for the connection of a HART communicator are integrated into the terminals of the device.

Technical specification
Supply
Rated voltage:	19-30V d.c.
Power consumption:	≤700mW
Input
Input signal:	4-20mA limited to approx. 30mA
Voltage drop Ud:	Approx. 6V or internal resistance 300Ω at 20mA
Input resistance:	>100kΩ at max. 23V, with field wiring open
Output
Current:	2-20mA
Load:	0-650Ω
Voltage:	≥13V at 20mA
Ripple:	20mV rms
Ambient temperature:	-20 to +60°C
Protection rating:	IP20
Mounting:	35mm DIN rail or panel mount
Dimensions:	w12.5 x h114 x d125mm

Features:

12.5mm slimline housing

3 port galvanic isolation

Single-channel isolated barrier

24V d.c. supply (Power Rail)

Resistance and RTD input (Pt100, Pt500, Pt1000)

Resistance output

Accuracy 0.1%

Line fault detection (LFD) for Pt100

Up to SIL2 acc. to IEC 61508

DIN rail/power rail solutions

Removable terminals reduce maintenance time

Fault detection and local indication