Каталог Weidmuller: Electronics - Analogue Signal Conditioning

Process monitoring with relay output – Overview
Process monitoring
The DPA-SERIES – process monitoring with relay output
F
Modules in the DPA-SERIES are used for monitoring threshold.
They can be configured for a wide variety of industrial signals
and feature two alarm outputs on the output side. A potentiometer
on the front side is used to custom adjust the setpoints
and deadbands. The deadband reduces chatter from the alarm
relay during switching operations. The reset point of the alarm
contact is individually adjusted away from the hystereses
(setpoint). In order to generate an alarm in the event of a power
outage, you should select the „energized“ operational status
for one or both of the output relays. A high/low-trip switching
behaviour can also be set independently for each channel.
The following analogue input signals can be processed with
the current DPA-SERIES: temperature (thermocouple and
PT100 temperature sensors), AC/DC currents and voltages,
measuring wire and potentiometer positions, resistances,
differential currents and differential resistances.
The monitoring modules from the DPA-SERIES feature complete
2-kV electrical isolation. Wires are connected on the front
side with a pluggable screw mechanism. The modules can be
directly mounted on TS35/TS32 DIN rails.
Typical application of DPA-SERIES DPAMA
Power
supply
24 V DC
Relay supply
z. B. 230 V AC
Alarm
Technical features
Relay
channel 2
DPA /
DMA /
4...20 mA
24 V DC
4 ... 20 mA
Relay
channel 1
Level
transmitter
• Custom module-specific input parameters
• Two alarm outputs via relay and LED status display
• Min./max.switching commands in any combination
• Front-side adjustments for deadzones and setpoints
• Reduction of contact chatter gives the alarm outputs
high switching precision.
• Complete 3-way electrical isolation
• Pluggable screw connection mechanism
• Sturdy metal housing for mounting on DIN-rail
Valve
F.24