FEC DSP1500 (SAN3) - Manual (Page 128)

enFORCE DSP1500 SAN Unit Operation Manual
(Rev 4) PAGE 7－4
Chapter 7: Maintenance & Inspection
7.1.1.2 Ball Screw Inspection (DPT Series)
Recommended Schedule: 1 year or 1 million cycles.
Inspect of the ball screw by removing the CW switch. Do the following with power off:
1. Mark the position of the CW switch (closest to the press ram) like what is shown in
section 7.2.3.3 for re-attachment reference.
2. Remove CW switch.
3. Inspect Ball Screw to verify that it is not scored and that the grease is not abnormally dirty
or containing metal debris.
4. Re-attach CW switch using reference marks.
7.1.1.3 Belt Tension Verification and Adjustment (DPS & DPM Series)
DPS and DPM series tools use a belt for motor torque transmission to the ball screw. The belt
tension is adjusted before shipment for optimal performance and long life, but may require periodic
tension verification and adjustment.
For maintenance purposes, the resolver position should be recorded at initial tool installation to be
used as a baseline reference (See 7.2.2). If, after time on periodic inspections, the resolver count
on a DPS tool drops by more the 500 points or out of the 1000~3000 range the belt tension may
need to be adjusted. If this occurs on a DPM tool contact FEC.
Inspection of the belt is done by removing the safety cover. Do the following with power off:
1. Loosen the safety cover bolts and remove
cover.
2. Verify that the motor fixing bolts are tight.
3. Check tension using a tension
measurement device.
a. Preferred device is a wave-style belt
tension meter (Ex: Gates Unitta Asia
P/N: U-507).
If the belt requires adjustment do according to the
following procedures:
1. Loosen Motor fixing bolts. Do not loosen
too much.
2. Turn the tension bolt to adjust belt tension.
a. Tension is raised when motor is
drawn toward side and lowered
when drawn towards press body.
3. Tighten the motor fixing bolts. (Tension will
rise a little as bolts are tightened)
4. Check tension using a tension
measurement device.
a. Preferred device is a wave-style belt
tension meter (Ex: Gates Unitta Asia
P/N: U-507).
5. Re-install safety cover.
※Tension range is 50 ~ 200% of specified value
Tool Model Belt Model Tension [N]※
DPM-051R1* 3GT-9 44
DPS-101R3* EV5GT-25 178
DPS-301R4* EV8YU-25 294
DPS-501R4* EV8YU-40 500
テンションボルト
安全カバー
固定ボルト（ 4ヵ所）
モータ
テンション 大 小
駆動ベルト
DPS-301R4H-**F
Fixed bolt（Four places）
High ← Tension → Low
Drive belt
Tension bolt
Safety cover
MOTOR
Example: