The externally supplied ACT20M…, ACT20P… , MAS RPS/RPSH and WAS/WAZ 4/5 signal converters/supply isolators for transmitting, isolating and converting standardised DC current signals are optionally available in widths of 6 mm (ACT20M…), 12.5 mm (WAS/WAZ4, ACT20P…) or 17.5 mm (WAS/WAZ5…).
The input and output circuits and the voltage supply are completely electrically isolated. The input signal is converted into a DC current or voltage value. WAVESERIES signal converters are optionally available with a limiting frequency of 10 Hz (WAS/ WAZ4) or 20 kHz (WAS/WAZ5) for fast signal processing.
The MAS/RPS/RPSH supply isolators can supply external 2-wire sensors (ACT20P 2-/3-wire sensors) and are optionally suitable for transmitting HART protocols (MAS RPSH, ACT20P).
The 24 VDC supply voltage can be cross-connected on the module side via the CH20M BUS PROFILE (ACT20M series) or using the ZQV4N (MAS) or ZQV 2.5N (WAS/WAZ) pluggable jumpers. International approvals such as ATEX zone 2, UL C1D2 and FM Div2 also enable use in explosive risk zones.
The ACT20M-CI-CO-ILP, MCZ CCC and WAS5 CCC LP are 1/2-channel passive isolators that are supplied via the input loop current. They are optionally available in 6 mm (ACT20M/ MCZ series) or 17.5 mm (WAS5 CCC LP) housings.
The input and output circuits are completely, electrically isolated from each other. The passive isolators are designed with 1 or 2 channels. International approvals (such as ATEX Zone 2, UL C1D2 and FM Div2) permit use in explosion-risk zones.
Passive isolators are used to electrically isolate normalised signals (from 0/4 to 20 mA).The modules get their power supply from the current loop on the input side. The power for signal transmission and supply comes from the active 0/4–20 mA signal. They have very low current consumption and can be used anywhere in the field where no suitable power supply is available.
These devices are used in a variety of application processes as signal isolators and signal multipliers. They can be used to eliminate measurement errors caused by differences in earth potentials.
The ACT20M-CI-CO-OLP, WAS/WAZ5 OLP signal isolator/splitter (2-wire system) is supplied via the output current loop and has an analogue DC current input.
The 1- and 2-channel signal isolators are supplied from the current loop. They are available in the 6.1 mm (ACT20M series) or 17.5 mm (WAVESERIES) housings. The input and output circuits are electrically isolated from each other. The power is supplied via the 4–20 mA current loop on the output side. The devices come optionally in a splitter version with two loop-fed outputs.
The devices can be mounted on a DIN rail and consume minimal power. International approvals (such as ATEX Zone 2, UL C1D2 and FM Div2) permit use in explosion-risk zones.
Signal converters with output-loop power supplies are used in a variety of application processes as signal isolators and signal multipliers (splitters) and signal amplifiers. They can be used to eliminate measurement errors caused by differences in earth potentials.