Siemens Sinumerik 840C Diagnostics Manual page 230

1 Alarms
1.5.1 Alarm description
301701 Limit value SG too large
Scan
Power On
Effect
The startup process is interrupted. The pulses remain disabled.
Explanation
The limit value of the safe speed is higher than the speed that corresponds to a limit frequency of 300 kHz.
The maximum permissible speed to be monitored is calculated as follows:
rev
+
n
max
min no. of encoder marks
Monitoring condition: MD1331 v 1
Remedy
Check the input in MD 1331, correct if necessary and execute a POWER ON.
Note
Applies as from SW 6
301706 Parameterization of cam position invalid
Scan
Power On
Effect
The startup process is interrupted. The pulses remain disabled.
Explanation
At least one of the cam positions parameterized and enabled via MD_SB_ENABLE contravenes the rule that cam
positions must not lie within the tolerance range around the modulo position.
The tolerance range is defined as follows:
a) With inactive cam synchronization (MD 1301 bit 7=0):
Upper modulo value – MD 1342 < cam position
Lower modulo value+MD 1342 x cam position
b) With active cam synchronization (MD 1301 bit 7=1):
Upper modulo value – MD 1340 – MD 1342 > cam position
Lower modulo value+MD 1342 x cam position
Upper/lower modulo value="737 280 000
Remedy
Check the parameterization of the cam positions MD 1336[0–3] and MD 1337[0–3] and the entry in MD 1305, cor-
rect if necessary and execute a POWER ON.
Check the input in MD 1305, correct if necessary and execute a POWER ON.
Note
Applies as from SW 6
301707 Parameterization module value for invalid
Scan
Power On
Effect
The startup process is interrupted. The pulses remain disabled.
Explanation
The parameterized modulo value for the function "Cams for endlessly rotating rotary axes" in MD 1305 is not a
multiple of 360 000 mdegrees.
Remedy
Check the modulo value for SN in MD 1305, correct if necessary and execute a POWER ON.
Note
Applies as from SW 6
301708 Actual value synchronization not allowed
Scan
POWER ON
Effect
The startup process is interrupted. The pulses remain disabled.
Explanation
Actual value synchronization with drift/slip is selected in MD 1301: "Enable safety functions ". This is allowed only
with SBH/SG monitoring, for the purposes of which the absolute actual position is insignificant. Safe limit position
and/or cam monitoring is, however, selected as well.
Remedy
Deselect actual value synchronization with drift/slip or safe limit position and/or cam monitoring in MD 1301: "En-
able safety functions".
Note
Alarm from SW 6.2
1–222
300000[Hz] * 60
* n with ü = speed ratio
max
ü

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SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
01/99
POWER ON
POWER ON
POWER ON
POWER ON