Siemens SINUMERIK 840D Series Diagnostics Manual page 482

1 Alarms
Program Continuation:
300509
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300510
Parameters:
Definitions:
Reactions:
1-482
• Replace the encoder, encoder cable or control module.
• Check the metallized intermediate circuit cover.
• If a BERO proximity switch is used, the zero marker of the encoder is still being moni-
tored and not the BERO signal.
Switch control OFF - ON.
Axis %1 drive %2 current frequency exceeded
%1 = NC axis number
%2 = Drive number
The motor has exceeded the maximum current frequency fmax (see below).
Current frequency = speed * number of motor pole pairs
Maximum current frequency:
• FDD: fmax = 1.12 * ninimum(1.2*MD 1400, MD 1147) * MD1112 / 60
• MSD: fmax = 1.12 * ninimum(MD 1146, MD 1147) * number of pole pairs / 60
• Number of pole pairs = integer component of rated motor frequency (MD 1134) * 60 /
rated motor speed (MD 1400)
- NC not ready.
- Channel not ready.
- Channel not ready.
- NC Stop on alarm.
- NC Start disable in this channel.
- The NC switches to follow-up mode.
- Alarm display.
- Interface signals are set.
Please inform the authorized personnel/service department.
• Check number of encoder lines in MD 1005: $MD_ENC_RESOL_MOTOR (encoder
resolution for motor measuring system).
• Check encoder power supply (short circuit or ground fault).
• Replace encoder, encoder cable or controller module.
• Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed),
• Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed).
• Modify MD 1147: $MD_SPEED_LIMIT (speed limit),
• Modify MD 1112: $MD_NUM_POLE_PAIRS (number of motor pole pairs) (FDD),
• Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENCY (rated motor frequency)
(MSD).
Switch control OFF - ON.
Axis %1 drive %2 error on actual current measurement zero balancing
%1 = NC axis number
%2 = Drive number
The value of the actual current exceeded the maximum permissible limits during current
zero balancing (performed on every pulse disable). For example, the synchronous motor
is rotating at a small intermediate circuit voltage and current is flowing across the free-
wheeling diodes in the intermediate circuit.
- NC not ready.
- Channel not ready.
- Channel not ready.
- NC Stop on alarm.
- NC Start disable in this channel.
- The NC switches to follow-up mode.
- Alarm display.
- Interface signals are set.
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02