maxon motor
4-Q-DC Servoamplifier ADS 50/5
Operating Instructions
8
Error Handling
Defect
Possible source of defect
Measures
Shaft does not rotate
Supply voltage <12 VDC
check power plug pin 4
Enable not activated
check signal plug pin 3
Set value is 0 V
check signal plug pin 1 and pin 2
Current limit too low
check adjustment potentiometer
P4
I
max
Wrong operational mode
check DIP switch settings
Bad contacts
check wiring
Wrong wiring
check wiring
Speed is not controlled
Encoder mode: encoder signals
check plug encoder
DC-Tacho mode: tacho signals
check plug signal pin 5 and 6 (polarity)
IxR mode: compensation wrong
check adjustment potentiometer
P1
9
EMC-compliant installation
Power supply (+V
CC
- Power Gnd)
•
No shielding normally required.
•
Star point-shaped wiring if several amplifiers are supplied by the same power supply.
Motor cable
•
Shielded cable highly recommended.
•
Connect shielding on both sides:
ADS 50/5 side:
Terminal 3 “Ground Safety Earth” and/or bottom of housing.
Motor side:
Motor housing or with motor housing mechanical design with low resis-
tive connection.
•
Use separate cable.
Encoder cable
•
Although the ADS 50/5 can also be operated without a line driver, using an encoder with a
line driver is recommended as this improves interference resistance.
•
No shielding normally required.
•
Use separate cable.
Analogue signals (Set value, Tacho, Monitor)
•
No shielding normally required.
•
Use cable shielding with analogue signals with small signal level and electromagnetically
harsh environment.
•
Normally connect shielding on both sides. Place shielding on one side if there are 50/60
Hz interference problems.
Digital signals (Enable, Ready)
•
No
shielding
necessary.
See also block diagram in chapter 10.
In practical terms, only the complete equipment, comprising all individual components (mo-
tor, amplifier, power supply unit, EMC filter, cabling etc.) can undergo an EMC test to ensure
interference-free CE-approved operation.
July 2009 Edition / Doc. No. 538837-07 / Subject to change
maxon motor control
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