16
SP 0.1, SPR 0.1
3.4 Adjustment of the Electronic Position Transmitter (EPV) - the Resistive
Transmitter (Potentiometer) with the Converter PTK 1
3.4.1
EPV – the 2-wire version (Fig. 4)
The position transmitter with the converter PTK1 is in the plant adjusted to have the output
current signal on the terminals 81-82 as follows:
•
in the position ”open“ .................... 20 mA
•
in the position ”closed“ .................. 4 mA
If the transmitter requires a new adjustment follow these
steps:
•
Put the actuator to the position ”closed“ and switch the
power supply off.
•
Adjust the resistive transmitter according to the previous
chapter. The resistance is to be metered on the terminals
X-Y (Fig. 4). The used transmitter resistance is
100
Ω
•
Switch the converter
′
s power supply on.
•
Turn the adjusting trimmer ZERO (Fig. 4) to adjust the
output current signal rate measured on the terminals 81-
82 to 4mA.
•
Set the actuator to the position ”open“.
•
Turn the adjusting trimmer GAIN (Fig. 4) to adjust the
output current signal rate measured on the terminals 81-82 to 20mA.
•
Check the output signal of the converter in the both limit positions, and repeat the procedure if
needed.
Note:
The output signal of 4-20mA can be adjusted at the range from 75 up to 100% of the rated stroke
stated on the actuator
′
s nameplate. At values less than 75% the value 20mA is reduced
proportionally.
Adjustment of the EPV in Electric Actuators SPR with controllers
•
Disconnect the circuit with removing a jumper on the terminals 81 and 82.
•
Disconnect the control signal from the terminals 86/87 and 88.
•
Set the actuator to the direction ”OPENING” or “CLOSING” with the handwheel, or with
connecting power to the terminals 1 and 20 for the direction “OPENING” or 1 and 24 for the
direction “CLOSING”.
•
Set the actuator to the position “CLOSING“ and switch the converter off on the terminals 1 a 61.
•
Adjust the resistive transmitter according to the previous chapter. The resistance is to be metered
on the terminals X-Y (Fig. 4).
•
Connect power supply to the terminals 1 and 61.
•
Turn the adjusting trimmer ZERO (Fig. 4) to adjust the output current signal rate measured on the
terminals 81-82 to 4mA.
•
Set the actuator to the position “open”.
•
Turn the adjusting trimmer GAIN (Fig. 4) to adjust the output current signal rate measured on the
terminals 81-82 to 20mA.
•
Check the output signal of the converter in the both limit positions, and repeat the procedure if
needed.
•
Having the transmitter adjusted put the jumper again on the terminals 81 and 82 in case that the
output signal wont be used (the circuit through the terminals 81 and 82 should be closed).
•
Connect the control signal to the terminals 86/87 and 88.
Fig.4
Summary of Contents for SP 0.1
Page 26: ...24 SP 0 1 SPR 0 1 6 Enclosures 6 1 Wiring diagrams Wiring diagrams for EA SP 0 1...
Page 29: ...SP 0 1 SPR 0 1 27 6 2 Dimensional drawings...
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