The gray areas in the above graph show where A.710 and A.720 alarms
occur.
Refer to the relevant manual given below for a diagram that shows the relationships
between the Servomotor heat dissipation conditions (heat sink size, surrounding air tem-
perature, and derating). You can protect the Servomotor from overloads more effectively
by setting this derating value in Pn52C.
Name Manual number
Σ-7-Series Rotary Servomotor Product Manual SIEP S800001 36
Σ-7-Series Linear Servomotor Product Manual SIEP S800001 37
Σ-7-Series Direct Drive Servomotor Product Manual SIEP S800001 38
6.15 Setting Unit Systems
6.15.1 Overview
You can set the SERVOPACK reference units with PROFINET communications. You can
set the following three reference units with PROFINET communications.
n Position reference unit
n Speed reference unit
n Acceleration reference unit
The setting procedures are given below.
6.15.2 Setting the Position Reference Unit
Set the position reference unit in Position User Unit (2301h). The position reference unit
setting will be used for the electronic gear ratio setting.
– Set the position reference unit within the following range.
1/4,096 < Numerator/Denominator < 65,536
If the setting range is exceeded, an A.A20 alarm (Parameter Setting
Error) will occur.
Index Sub-
index
Name Data
Type
Access PDO
Map-
pings
Value Saving
to
EEPRO
M
2301h 1 Numer-
ator
UDINT RW No 1 £ Value
range £
2
31
-1(def
ault: 1)
Yes
2 Denomi-
nator
UDINT RW No 1 £ Value
range £
2
31
-1(def
ault: 1)
Yes
Sigma-7 Series SERVOPACKs
Basic Functions That Require Setting before Operation
Setting Unit Systems > Setting the Position Reference Unit
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 178
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