Curtiss-Wright | Tritex II AC 90, 115 Rev. X PN39892 7/12/22
Manual Drive Operating Instructions
Isolate all sources of energy to prevent safety hazard
due to unexpected motion
System design and operating procedures must ensure
that the drive will have no unintended motion that can create a hazard
to personnel when operating the drive manually. This includes electrical
energy turning the motor as well as energy stored in a vertical load
or spring.
There are two manual drive options available on the Tritex, Hand
Wheel (HW) and Side Drive (SD)
The hand wheel option includes an internal switch that is closed when
the hand-wheel drive is fully disengaged and opens when an attempt is
made to engage the hand wheel drive. This switch is in series with the
actuator overtemperature sensor to form a combined run permissive
signal. When manual drive is engaged, an Actuator Overtemperature
fault occurs. The fault action for this fault will disable the drive.
This function is not safety rated, so is not usually sufficient to ensure
safety. Power to the drive must be isolated before manually operation.
The Side Drive does not include and interlock switch so power must
be removed before use.
Important information to avoid damage to the manual
drive
• If manually driving with a brake engaged or high force is
necessary, please consult Exlar Application Engineering.
• If a power tool is used to operate the manual side drive the
speed should be limited to 600 RPM
• An impact driver should never be used to operate the manual
side drive.
• Determine end of stroke of actuator or system and do not apply
force past it.
• Refer to Table 1 for maximum torque specifications.
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