Technical information

153
Troubleshooting
(b) Check continuity conformance to the cable diagram in Figure 102, “Resolver
Wiring Diagram,” on page 145 to ensure no shorts or opens. Flex cable at both
ends to check for intermittent operation.
(c) Check for cable flexure stress as load moves. This may eventually cause cable
failure.
(d) Check for electrical noise or AC lines and I/O lines.
Figure 105: Resolver Wiring Diagram
6. Check ambient temperature inside enclosure.
(a) Amplifier must be mounted to a heat conducting surface, vertically, with power
connection towards the bottom of the enclosure.
(b) Motor and amplifier must be mounted to heat-conducting surfaces for full rated
power.
(c) Note any unusual environmental conditions at the time the problem occurred
(Maximum amplifier ambient temperature 45° C).
(d) Verify enclosure is adequately sized and amplifier has proper clearance.
(e) Check operation of all cooling equipment (fans, air conditioners, filters, etc.)
7. Check current draw of motor under load with an oscilloscope. This can be measured at
the Command Connector between pins 13 and 11. Proportional signal 10 VDC = Peak
Current.
(a) Program longer ramp times to reduce the peak torque required.
CONNECTOR SHELL
YEL/WHT
RED/WHT
RED
YEL
BLU
BLK
BLU/WHT
BLK/WHT
SHLD
9 PIN MALE
"D" TYPE
1
9
4
2
7
8
6
5
3
TO AMPLIFIER TO MOTOR
R GND
REF
SIN
COS
C GND
S GND
SHLD
THERM
THERM