
B–63325EN/03
7.TROUBLESHOOTING
393
NOTE
COP10A–1 and COP10A–2 are optical connectors for
FSSB lines. Just an axis control card of type B has
COP10A–2.
The table below lists the messages that may appear in (1) on the screen.
The cause and corrective action differ depending on the message.
NOTE
If #1 or #2 is displayed after a message, the number
represents the optical connector causing the alarm on the
axis control card. COP10A–1 and COP10A–2 in Figures
7.11.3 (a) and (b) respectively correspond to #1 and #2.
Alarm message Cause Action
FSSB DISCONNECTION
(MAIN→AMP1)
Communication between
an axis control card and
the first servo amplifier
cannot be established.
Replace the optical cable
connected to the axis con-
trol card. If this does not
remove the alarm, replace
FSSB DISCONNECTION
(MAIN→PULSE MODULE1)
Communication between
an axis control card and
the first pulse module can-
not be established.
the axis control card.
FSSB DISCONNECTION
(AMPn→AMPm)
Communication between
the servo amplifiers n and
m cannot be established.
Communication between
Replace the optical cable
that connects servo ampli-
fier or pulse module m to
the servo amplifier n con-
FSSB DISCONNECTION
(AMPn→PULSE MODULEm)
servo amplifier n and the
pulse module m cannot be
established.
nected to the axis control
card. If this does not clear
the alarm, replace servo
amplifier n.
FSSB DISCONNECTION
(PULSE MODULEn→AMPm)
Communication between
pulse module n and servo
amplifier m cannot be es-
tablished.
Replace the optical cable
that connects servo ampli-
fier m to pulse module n
connected to the axis con-
trol card. If this does not
clear the alarm, replace
pulse module n.
FSSB DISCONNECTION
(PULSE MODULE1→PULSE
MODULE2)
Communication between
the first and second pulse
modules cannot be estab-
lished.
Replace the optical cable
that connects the second
pulse module to the first
pulse module connected to
the axis control card. If
this does not clear the
alarm, replace the first
pulse module.
FSSB DISCONNECTION
(MAIN←AMP1)
Communication between
an axis control card and
the first servo amplifier
cannot be established.
Replace the optical cable
connected to the axis con-
trol card. If this does not
clear the alarm, replace
the first servo amplifier.
FSSB DISCONNECTION
(MAIN←PULSE MODULE1)
Communication between
an axis control card and
the first pulse module can-
not be established.
Replace the optical cable
connected to the axis con-
trol card. If this does not
clear the alarm, replace
the first pulse module.
D Cause and action (1)