YASKAWA DX200 - Page 195

13 Trouble Shooting When Alarm is not Displayed
13-2
The data of robot controller is stored in the CF card of YCP21 circuit board and the
memory of I/F circuit board(YIF).
Screen status of
programming
pendant
7SEG
LED for
robot I/F
circuit
board
(YIF)
Assumed status Cause Remedy
The screen does
not become bright
and nothing is
displayed.
Lights
OFF
The control power is
not provided from the
YPS power supply unit.
Power
supply
failure
When the green LED of YPS power
supply unit SOURCE is OFF, check the
followings
-For the primary power supply voltage,
make sure that the voltage is not
dropped and there is no open phase.
-Make sure that the breaker is not
tripped.
-Make sure that the fuses of the YPS
power ON unit (1FU,2FU) are not melt.
When the fuse is melt, replace after
checking the cause. (refer to *6)
-Check whether the control power supply
is not turned OFF by the external
REMOTE signal.
-Make sure that the following connectors
are connected properly and there is no
wiring error (disconnection).
(1)YPU-CN601, CN603, CN610, CN612
(2) YPS-CN151
Cable
failure
-When the green LED of the YPS power
supply unit SOURCE is ON, make sure
that the following connectors are
connected properly and there is no wiring
error (disconnection).
(1)YPS-CN152, CN154, CN158
(2)YRK-CN5
(3)YSF22-CN213, CN218
-Make sure that the red LED (5V) in the
YPS power supply unit is OFF. When it is
ON, make sure that there is no wiring
error (ground fault or shortcircuit
because of the wire damage) for the
following connectors.
(1)YPS-CN158
(2)YRK-CN5
The YPS power supply
unit is out of order.
YPS unit
failure
Check that all the red LEDs
[+5V][+24V][FAN][OHT] of YPS power
supply unit are OFF. If these LEDs are
OFF, replace the YPS unit. (refer to *3)
‘P’ The programming
pendant is out of order
or malfunctions.
Programming
pendant
failure
-Turn the power OFF then back ON.
-If the error occurs again, replace the
programming pendant.