Impulse Control - ABB OTM C Series Installation And Operating Instructions Manual

Installation and operating instructions, OTM_C
2. Turn the Motor/Manual selection switch to the Motor (M) position, see Figure 6.2.
Figure 6.2 Motor/Manual selection switch in the Motor (M) position
3. Operate the motorized change-over switch with the push-buttons or selector switch via impulse
control or continuous control.
The motor operator is protected from overloading by a fuse (F1) under the motor
operator. Only use the same type of fuse that is described on the label close to the
fuse.

6.1.1 Impulse control

When using impulse control, the change-over switch is operated by electric impulses. When you press
the control button, the change-over switch is driven to the corresponding position (I, 0, II). The control
impulse must last more than 100ms to take effect. A new command cannot be given until the change-
over switch has reached the position of the previous command. Figure 6.3 shows the operation of the
change-over switch with impulse control.
If a new command is given before the switch has reached the position of the
previous command, the fuse (F1) may operate.
Figure 6.3 Impulse control
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1SCC303002M0204, rev. D
6. Operating