C.12 Self-Diagnostics
The drive has a built-in self-diagnosing function of the serial communication interface circuits. To perform the self-diagnosis
function, use the following procedure.
DANGER! Electrical Shock Hazard. Do not connect or disconnect wiring while the power is on. Failure to comply will result in death or
serious injury. Before servicing, disconnect all power to the equipment. The capacitor for the control power supply remains charged even
after the power supply is turned off. The charge indicator LED will extinguish when the control power supply voltage is below 50 Vdc. To
prevent electric shock, wait at least one minute after all indicators are OFF and measure the control power supply voltage level to confirm
safe level.
1.
Turn on the power to the drive.
2.
Note the present terminal S6 function selection setting (H1-06) and set it for the communications test mode
(H1-06 = 67).
3.
Turn off the power to the drive.
4.
With the power off, wire the drive as shown in
, connecting terminals R+ and S+, R- and S-, and S6 and
SC.
E(G) IG R+ R- S+ S-
S1 S2 S3 S4 S5 S6 S7 S8 SN SC SP
V+ AC A1 A2 A3 FM AM AC
24V
RP AC
M1 M2 M3 M4
MD ME MF
MA MB MC
E(G) IG R+ R- S+ S-
S1 S2 S3 S4 S5 S6 S7 S8 SN SC SP
V+ AC A1 A2 A3 FM AM AC
24V
RP AC
M1 M2 M3 M4
MD ME MF
MA MB MC
Figure C.8 Terminal Connections for Communication Self-Diagnostics
5.
Verify that terminals SC to SP are connected by wire jumper.
6.
Turn the power to the drive back on.
7.
During normal operation, the drive will display “PASS” to indicate that the communications test mode is operating
normally.
When a fault occurs, the drive will display “CE” on the keypad display.
8.
Turn off the power supply.
9.
Remove the wire jumpers from terminal R+, R-, S+, S-, and S6 to SC. Reset jumper SC to SP to its original position
and set terminal S6 to its original function.
10.
Return to normal operation.
C.12 Self-Diagnostics
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
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C
MEMOBUS/Modbus Communications
