Siemens SINUMERIK 840D - Page 776

Overview of Alarms 11/2006
SIMODRIVE alarms
2-776
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
301711 Axis %1 drive %2 transmission length SSI motor measuring system
invalid
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The configuration of the motor measuring system for an SSI encoder is incorrect: MD 1028
$MD_NO_TRANSMISSION_BITS (SSI transmission length) is less than the number of all
parameterized bits in MD 1021 $MD_ENC_ABS_TURNS_MOTOR (multiturn), MD 1022
$MD_ENC_ABS_RESOL_MOTOR (singleturn) and MD 1027 $MD_ENC_CONFIG bit 14 (alarm bit)
and MD 1027 $MD_ENC_CONFIG bit 12 (parity bit).
Reaction: Mode group not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: - Set parameters correctly for all associated machine data:
- MD 1028 $MD_NO_TRANSMISSION_BITS (SSI transmission length): number of bits in an SSI
protocol, including all bits, such as alarm bit/parity bit
- MD 1021 $MD_ENC_ABS_TURNS_MOTOR (multiturn): number of resolvable revolutions
- MD 1022 $MD_ENC_ABS_RESOL_MOTOR (singleturn): number of increments per revolution.
- MD 1027.Bit 12 $MD_ENC_CONFIG.Bit 12: parity bit
- MD 1027.Bit 14 $MD_ENC_CONFIG.Bit 14: alarm bit
- Example:
- SSI encoder with 25 bits transmission length, 12 bits multiturn, 12 bits singleturn, one alarm bit:
- $MD_NO_TRANSMISSION_BITS = 25
- $MD_ENC_ABS_TURNS_MOTOR = 4096
- $MD_ENC_ABS_RESOL_MOTOR = 4096
- $MD_ENC_CONFIG.Bit 14 = 1
- $MD_ENC_CONFIG.Bit 12 = 0
Program
Continuation:
Switch control OFF - ON.
301712 Axis %1 drive %2 multiturn SSI motor measuring system invalid
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The configuration of a linear SSI motor measuring system is incorrect: A linear measuring system
cannot have any multiturn information.
Reaction: Mode group not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Set MD 1021 $MD_ENC_ABS_TURNS_MOTOR (resolution number revolution) to 0.
Program
Continuation:
Switch control OFF - ON.