Siemens SINUMERIK 840D sl Series Diagnostics Manual page 837

08/2005
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The motor has exceeded the maximum converter frequency fmax (see below). Converter
frequency = speed * number of motor pole pairs
Maximum converter frequency:
• FSD: fmax = 1.12 * minimum(1.2*MD 1400, MD 1147) * MD1112 / 60
• MSD: fmax = 1.12 * minimum(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)
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: Please inform the authorized personnel/service department.
• Check number of encoder lines in MD 1005: $MD_ENC_RESOL_MOTOR (encoder res-
olution 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).
Program Con- Switch control OFF - ON.
tinuation:
300510
Axis %1 drive %2 error on actual current measurement zero balancing
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: 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.
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: • Error in actual current measurement (if necessary, replace 611D power section or con-
troller module)
• Incorrect power section module (1/2 axis)
• Check the contact between the controller module and the power section
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
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