35
4.3.3 Close limit and Open limit calibration through counter gears/ limit switches
After calibration of limit through MWG.2, CLOSE limit and OPEN limit to be calibrated
inline with MWG,2 and make sure the CLOSE limit trip and OPEN limit trip happens
through counter gears and limit switches inline with MWG.2.
Please follow below steps for CLOSE limit and OPEN limit calibration through counter
gears and limit switches.
1.
Electric connection
For 3 phase AC - motors:
Check whether terminal links are fitted to suit type of motor and power supply
(fig.1).
Connect wires R-S-T to terminal pins U1-V1-W1 (fig. 2), for flame proof enclosure
at clip-on terminals.
For single - phase or DC - motors, see instructions in terminal compartment.
Connect control wires according to the wiring diagram.
Terminal plan is inside the terminal compartment.
Note : The two circuits of each switch (fig. 3) are suitable only for the same
potential.
2.
Remove cover at switch compartment (fig.4) Check whether limit-switch has tripped
(fig.5) Valve completely closed : WSR tripped Valve completely opened : WOL
tripped
3.
Engage manual drive :
Push declutch lever as indicated by arrow (fig. 6). If resistance is felt, turn
handwheel slowly while lever is pressed till manual drive engages.
4.
Operate valve to intermediate position manually (fig. 7)
Direction OPEN ( ) turn handwheel anti-clockwise. Direction CLOSED ( ) turn
handwheel clockwise. Switch cam at (Z) or (O) should rotate 90° and release the
switch (fig. 8) if set properly.
5.
Ensure sealing faces at control plug are clean and check whether O-ring is ok.
Apply thin film of non - acid grease to sealing faces, then replace plug cover (fig. 9)
6.
Connect to mains. Switch on motor momentarily. Manual drive will be disengaged
automatically.
7.
Check direction of rotation (fig. 10), observing arrows at limit switch counter gear
(fig.11). If incorrect, stop immediately and change sense of rotation (if 3 phase AC-
motor, exchange any two phases)..
Weather proof actuators with 3.XMP-SIL &
Data logging
Содержание SA3-SA100
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