Regada MP 52 200, Инструкции по установке, обслуживанию и техническому обслуживанию

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MP 52 200 13
3. Adjusting of actuator
Abide by safety measures!
·
electric switching the electric motor from the manual control status to the electric way of control,
·
electric blocking of the electric actuator while other mechanisms or devices operate,
·
adjustment of torque rate,
·
remote information about valve's stage of opening on the control board with variable resistance of
the remote resistance transmitter (potentiometer).
The adjustment can be performed at a mechanically and electrically connected EA. This part
describes adjustment of EA to specified parameters in case that any unit of EA is reset. Laying of
adjusters of the control board is shown on Fig.2.
3.1 EPV – the 2-wire version (Fig. 6)
The position transmitter with the converter PTK1 is in the plant adjusted to have the output
current signal on the terminals 81-82 (the wiring diagram Z23) 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. 6). The used transmitter resistance is
100
W
.
·
Switch the converter
¢
s power supply on.
·
Turn the adjusting trimmer ZERO (Fig. 6) 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. 6) 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.
3.2 EPV – 3-wire version (Fig. 7)
The resistive transmitter with the converter is in the plant adjusted to have the output current
signal metered on the terminals 81-82 (the wiring diagram Z257 - without power supply) as follows:
·
in the position „open“..................................... 20 mA or 5 mA
·
in the position „closed“ .................................. 0 mA or4 mA
according to the specified version of the converter.
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. 7). The used transmitter resistance is
2000
W
or 100
W
.
·
Switch the converter
¢
s power supply on.
Fig. 6
!