User Documentation

Introduction
16 1066540000/08/12-2018
4.1.3 The Six Basic Module Types in
Detail
NAMUR Pulse Isolator
The pulse isolator ACT20X-HDI-SDO is a special
signal isolator/converter for NAMUR sensor signals
from within Ex Zone 0. Transistor or relay outputs
are available on the output side.
A dual-channel version is optionally available.
Solenoid/Alarm Driver
The ACT20X-SDI-HDO is a solenoid/alarm driver for
the control of solenoids, acoustic alarms and LEDs
mounted in the hazardous area (Ex Zone 0).
Optionally one or two channel versions available.
HART-Transparent Repeater
The ACT20X-HAI-SAO current supply isolator is a
HART-protocol, transparent isolator for analogue
input signals from Exzone 0. The input may also
operate as an active current loop (the loop current
provided by the device). It provides an 4...20 mA
current signal for the safe zone on the output side.
It is available in a single-channel or two-channel
version.
HART-Transparent Driver
The ACT20X-SAI-HAO is a HART-protocol,
transparent current output isolator. A DC current
input signal from the safe area will be galvanically
separated and drives controlled field devices in Ex
zone 0.
It is available in a single-channel or two-channel
version.
Temperature/mA Converter
The devices of the ACT20X-HTI-SAO family transmit
analog signals galvanic isolated from hazardous
areas to the safe area. The input circuits are
designed intrinsically safe.
The ACT20X-HTI-SAO converts and isolates current
and temperature sensor signals (mA, RTD and TC).
The two-channel version ACT20X-2HTI-2SAO can
be used as a signal splitter for mA signals.
For the higher accuracy of thermo couple signals,
the use of special cold junction terminals ACT20X-
CJC-HTI-S (PRT 11 = 1-channel, PRT 21 = 2-
channel) recommended
Universal Converter
The universal isolator/converter ACT20X-HUI-SAO
is a user configurable temperature and signal
converter for Pt100, thermal and current (mA) inputs
from within Ex Zone 0 as well as an output for non-
hazardous area devices.
The ACT20X-HUI-SAO converts and isolates
current, voltage, potentiometer and temperature
sensor signals (mA, V, potentiometer, RTD and TC).
For the higher accuracy of thermocouple signals, the
use of special cold junction terminal ACT20X-CJC-
HTI-S is recommended:
1160640000 ACT20X-CJC-HTI-S PRT 11 (1-chan.)
Features
• Full functionality interfacing with Zone 0 /
Division 1 hazardous area inputs and outputs
• Approvals include use for Zone 0 (IECEx, ATEX),
Class I, Division 1 and 2 (FM).
• Analogue and binary signal interfacing with
measurement and control devices.
Temperature, DC, resistance and potentiometer
• inputs
• Milliamp and relay/opto outputs
• High quality, 3-port isolation
• Dual channel options – minimizes rail space and
installation cost
• HART-transparent signaling
• Integral fault alarm
• -20 to +60 °C ambient temperature
• All modules configurable with FDT/DTM Software
"WI-Manager"