B–65195EN/01
3. TROUBLESHOOTING AND
RECOVERY PROCEDURES
TROUBLESHOOTING AND RECOVERY
57
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 3 CSAL BLAL PHAL BZAL CKAL SPH
(⇒ See Section 3.3.1.)
Whether the
alarm occurs in
each pulse coder
α pulse
coder
Serial
A
SPH (b0)
Probably, pulse coder or feedback cable is
abnormal, or noise
ff
CKAL (b1)
For serial pulse coder A, a clock alarm has
occurred.
For
α pulse coder, the pulse coder or feed-
back cable is abnormal.
X f
BZAL (b2)
The voltage of the pulse coder battery is 0
V. Replace the battery and cause a return
to the reference position.
ff
PHAL (b4)
Pulse coder or feedback cable is abnormal
X f
BLAL (b5)
The voltage of the pulse coder battery is
dropping (warning).
ff
CSAL (b6)
For serial pulse coder A, a check sum
alarm has occurred.
For
α pulse coder, an LED error has oc-
curred.
X f
(b7)
This is not an alarm.
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 5 LDAL PMAL
(⇒ See Section 3.3.1.)
PMAL (b3)
The pulse coder or feedback cable is ab-
normal.
f X
LDAL (b4)
The pulse coder LED is abnormal.
f X
D Serial pulse coder A
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 3 RCAL
(⇒ See Section 3.3.1.)
RCAL (b3)
A rotation speed data error alarm occurred.
3.3.6
Pulse Coder Error
Alarm
3.3.7
Rotation Speed Data
Error Alarm