ZPA Pecky, a.s. 52 020, Руководство по установке

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INDUSTRIAL SIGNAL CONVERTERS TO MOUNT ON DIN TS-35
(IP 20) rail
Converter for resistive transmitters with current output 4 – 20 mA 222-224 RIP
Use
The converters are designed to convert signal from the resistive transmitters to standardized current output of 4 - 20 mA.
Description
The signal from the variable resistor is brought to the input of the converter. The resistance of supply conductors is fully
compensated. The circuit operates as a passive transmitter in current loop. The converter output serves also to its power
supply. The converter is not equipped with galvanic isolation of input and output signal.
Working conditions
Temperature near the converter box may during operation reach a max. of +70 °C (upon request of client for a fee up
to +85 °C). The converter can be located at any position.
Note
GND terminal must be well grounded (on the chassis of the switchboard or to GND of the power supply). For the converter
with an input for potentiometer the maximum output current is at the connection of terminals no. 2 and 3.
Installation instructions
Activities under this section must be performed by at least knowledgeable personnel in accordance with section 5
of the Decree no. 50/1978 Coll., respectively 51/1978 Coll. The 222-224 RIP converter (222-224 RIR) is attached by
sliding on the DIN TS35 rail. First, place the top pin of the box holder to the top edge of the rail and with a screwdriver
(max. 4 x 1 mm) gently pull the lock of the bottom locking pin. Press the bottom part of the box to the bar and then release
the lock. Doing so will snap the box to the rail. Similarly, you can remove the box from the rail. The connecting cables
should be connected as shown in Fig 3. If it is necessary to readjust the measuring range of the converter, it is possible
to set the span and zero of the converter using a clockmaker’s screwdriver after previous removing the lid of the box.
The position of the adjustment trimmers is shown in Figure 2. The recommended power supply for the converter is UNAZ
stabilized power supply 24 V / 1.5 W
(manufacturer TRESTON s.r.o.).
Technical data
input signal potentiometer
sensor connection three-wire a the potentiometer or rheostat
(fully compensated influence of connections).
measuring ranges see Table of measuring ranges
errors (ČSN IEC 770) basic 0.1 %
hysteresis 0.02 %
repeatability 0.015 %
linearity 0.08 %
temperature dependence (ČSN IEC 770) zero error 0.15 % / 10 K
margin error 0.1 % / 10 K
maximum error 0.2 % / 10 K