NSK MEGATORQUE M-ESB-YSB2020AB300 - Terminal Trouble; Brake Sequence Function

— 11-10 —
B
B
3
3
t
t
y
y
p
p
e
e
B
B
5
5
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t
y
y
p
p
e
e
11.2. Troubleshooting
11.2.4. Terminal Trouble
2
2
3
3
t
t
y
y
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p
e
e
2
2
5
5
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11.2.4. Terminal Trouble
Figure 11-10: Communication is disabled.
Communication is disabled. (Charactors on the display is abnormal.)
Check wiring of CN2.
Check the power source of the Driver Unit.
The baud rate of the Driver Unit and the Terminal are different.
(The shipping set of communicatin baud rate is 9600bps for both the Driver Unit and the Handy Terminal.)
Check the frame ground.
NO
YES
Alarm occurs after the
power is turned on.
Refer to “7.3.4. Daisy Chain Communication.”
11.2.5. Brake Sequence Function
Figure 11-11: Brake sequence function
A start command does not release the brake.
• The photocoupler for BRKC output has broken in
the open mode.
• 24 VDC brake power source is off.
• The relay for brake power supply does not close.
がオ な
The brake does not engage at the end of
positioning.
• The photocoupler has broken in the closed
mode.
• The relay for the brake power source
remains on.
Software thermal alarm or Motor has burnt.
• The integration control is not OFF while the
brake is on.
• The brake sequence function is not active.
Rigidity of servo decreases when the
Motro is stationary.
• The integration control is OFF when
stopping because the brake sequence
function has been activated even the brake
is not in used.