Continuous Control - ABB OTM C Series Installation And Operating Instruction

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M O T O R I Z E D C H A N G E - O V E R A N D T R A N S F E R S W I T C H E S , O T M _ C

8.1.2 Continuous control

When using continuous control, the control command is supplied to the switch continuously. When you
press the control button, the change-over switch is driven to the corresponding position (I, 0, II). Oper-
ation of position 0 will over-run control of the other positions; that is, if you simultaneously give the 0
command with another command, the change-over switch is driven to position 0. Figure 8.4 shows the
operation of the change-over switch with continuous control.
The continuous control command can be given with push buttons, cam switches
or with relays incorporated in PLC equipment or with other suitable contacts.
Information
I - position
0 - position
I+II ( CL)
_
II - position
Figure 8.4 Continuous control
I - command II - command
0 - command
I+II ( CL)
_
0 - command