6.2 CPD10/15/20/25/30/35J C1、CPD10/15/18/20/25/30/35J C2、CPD40/45/50J C2
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6.2.1 Summarize
CURTIS company procreates controller ，adopt international advanced closed loop system and
advanced control technique。Designing large screen instrument，can clear display ―electric quantity‖、
―speed‖、―total time of run ‖ and so on information。Designation adopt code plus character manner，
increase maintain efficiency。Four work models can be set through meter so as to suitable for different
condition.
（1）Actuating motor
Actuating motor adopt three-phase alternating current frequency conversion electromotor，increase
conversion efficiency，not have commentator brush in order not to maintenance 。
（2）Lift motor
Lift motor JC1 is direct current motor, so is the motor of J series truck. Lift motor JC2 adopts
three-phase alternating electromotor，increase conversion efficiency，not have commentator brush in
order not to maintenance.
（3）SAFETY & PROTECTION FEATURES
① Reverse Polarity of the battery
②Connection errors
③All inputs are protected against connections errors.
④Current overload protection
⑤it have detecting element，control peak current.
⑥Thermal protection
If the controller temperature exceeds 85°C, the maximum current reduces in proportion to the
thermal increase. The temperature can never exceed 115°C.
If the electric machinery temperature exceeds 145°C, the maximum current reduces in proportion to the
thermal increase. The temperature can never exceed 165°C.
⑦Low Battery charge
When the battery charge is low, the maximum current is reduced proportionally to the battery
discharge.
⑧External Agents
Electric control is hermetical .The chopper is protected against dust and spray of liquid to
economy.
⑨Protection against accidental Start Up
A precise sequence of operations is necessary before the machine will start. Operation can not
commence if these operations are not carried out correctly. Requests for drive must be made after
closing the Key Switch.
（4）OPERATIONAL FEATURES
① Feedback control system make the vehicle speed follow accelerator ，whether low speed or not
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