34
OP
11-3) Operating instructions
• Change speed only after starting Variator. Never attempt to perform speed change operation when the unit is at a
standstill.
To prevent such erroneous operation, it is recommended that power to pilot motor (PM) be obtained from secondary side
of main motor power supply. (Refer to Fig. 23 on page 31)
(1) Starting
• Stopping main motor during speed change operation can break discs or cause other trouble. Therefore, before
opening switch for main motor, disconnect speed change operation circuit without fail.
In this case, erroneous operation can be prevented by making connection as shown in Fig.23 on Page 31.
(2) Speed change
Pilot motor (PM) will run and speed change will take place while pushbutton switch for speed change control is being
pressed. When desired revolutions have been reached, release pushbutton switch to stop PM. Then Variator will run at
a constant speed thereafter. To reverse PM (for instance, in order to switch from acceleration to deceleration), depress
pushbutton again for desired operation after PM has come to a stop.
(3) Stopping
12. Speed Setter
Speed setter is automated control device that can control variator by rotation speed feedback system, which sets desired output
rotation speed by digital switch or electronic signal DC4-20mA.
Refer to Speed Setter SP-20E Operating Manual for handling instructions.
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