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2-36 SINUMERIK 801
Start-Up
Table 2-19 LED alarms
LED
Name Color
Meaning Remedy
RDY green the only LED
that is lit
Drive ready If the motor does not rotate, it can
have the following causes:
- No pulses are output by the
control system.
- Pulse frequency too high
(motor is “out of step”)
- Motor load too large or
sluggish
DIS yellow the only LED
that is lit
Drive ready; motor not powered Activate ENABLE signal via CNC
FLT red is lit There is one of the following
errors:
- Overvoltage or undervoltage
- Short-circuit between the
motor phases
- Short-circuit between motor
phase and ground
Measure 85 V operating voltage
Check cable connections
TMP red is lit Overtemperature in the drive Drive defective; replace
all No LED is lit No operating voltage Check cable connections
Selection of the drive
transformer
Configure the stepper motors in different torques with a drive transformer
(380VA C->85VAC) that has a suitable power.
Table 2-20 Reference table for power ratings of differnt transformers
*
MLFB (Order No.) of
Motor
No. of
motor
axes
Torque (Nm)
Power of
transformer
(KVA)
6FC5 548-0AB03-0AA0 1 3.5 0.3
6FC5 548-0AB06-0AA0 1 6 0.403
6FC5 548-0AB09-0AA0 1 9 0.612
6FC5
548-0AB012-0AA0
1 12 0.7
6FC5
548-0AB018-0AA0
1 18 1.368
6FC5
548-0AB025-0AA0
1 25 1.420
*Select the drive transformer based on this table and the simultaneity factor of
the machine coordinates (coefficient recommended: 1.0).
2.4.2 Connecting the servo drive modules
Please refer to relevant technical instructions for the connection with servo
drive.
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