
B–62835EN/01
5. DIGITAL SERVO
217
#7 #6 #5 #4 #3 #2 #1 #0
Alarm1 OVL LV OVC HCA HVA DCA FBA OFA
DGN (200) :
#7 (OVL) : Overload alarm
#6 (LV) : Insufficient voltage alarm
#5 (OVC) : Overcurrent alarm
#4 (HCA) : Abnormal current alarm
#3 (HVA) : Excessive voltage alarm
#2 (DCA) : Discharge alarm
#1 (FBA) : Disconnection alarm
#0 (OFA) : Overflow alarm
#7 #6 #5 #4 #3 #2 #1 #0
Alarm2 ALD EXP
DGN )⇓
Over-
0 — — — Amplifier overheat
alarm
1 — — — Motor overheat
Discon-
nection
1 — — 0 Built–in pulse coder disconnec-
tion (Hardware)
a
arm
1 — — 1 Separate type pulse coder dis-
connection (Hardware)
0 — — 0 Pulse coder disconnection (soft-
ware)
#7 #6 #5 #4 #3 #2 #1 #0
Alarm3 CSA BLA PHA RCA BZA CKA SPH
DGN (202) :
#6 (CSA) : Hardware of serial pulse coder is abnormal.
#5 (BLA) : Battery voltage is in low (warning).
#4 (PHA) : Serial pulse coder or feedback cable is abnormal.
Counting the feedback signal is in error.
#3 (RCA) : Serial pulse coder is faulty.
Counting is in error.
If the RCA bit is set to 1 when both the FBA bit (bit 1
of alarm 1) and ALD bit of alarm 2 are set to 1 and the
EXP bit of alarm 2 (internal hardware disconnection)
is set to 1, a count miss alarm (CMAL) occurs in the α
pulse coder.
#2 (BZA) : Battery voltage becomes 0.
Replace batteries and set the reference position.
#1 (CKA) : Serial pulse coder is faulty.
Internal block has stopped.
#0 (SPH) : Serial pulse coder or feedback cable is faulty.
Counting the feedback signal is in error.