Siemens SINUMERIK 840C Installation Instructions Manual page 486

09.95
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bits 9-15
1701
This machine data is used to display the voltage level at the DC link in normal or set-up mode.
The DC-link voltage U
1702
This machine data is used to display the motor temperature. The motor temperature is
measured by appropriate sensors and evaluated in the drive.
1706
This machine data is used to display the speed setpoint which represents the unfiltered
summation setpoint. It comprises the component of the position controller output and the
speed feedforward control arm. Time-synchronous unlatching (scanning) of machine data MD
1706, MD 1707 and MD 1708 is not provided. The appropriate machine data is unlatched by
the read request of the non-cyclical communications protocol.
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SINUMERIK 840C (IA)
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Control unit enable (internal module function), including marking according to
MD 1003, bit 5
Image terminal 663 (module-specific pulse suppression IMPFR)
Image terminal 63/48 of I/RF unit (central drive pulse suppression REIMSP)
Sum signal pulse enable:
"Heat sink of power section XKKT too hot" message: Low active signal
Image terminal 112 of I/RF unit (set-up mode message XEINR):
Low active signal
Image terminal 64/63 of I/RF unit (Central drive enable setpoint = 0)
Not assigned
Image terminal 5 of I/RF unit (motor/power section temperature prewarning X12T):
Low active signal
Not assigned
Default value Lower output limit
0 0000
is measured continuously.
DClink
Default value Lower output limit
0 0000
Default value Lower output limit
0.0
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7 Drive Machine Data (SIMODRIVE Drive MD)
– Stored hardware sum signal
– Axial pulse enable by PLC via 611D control
word
DC link voltage
Upper output limit
32 767
Motor temperature
Upper output limit
32 767
Speed setpoint
Upper output limit
0 32 767.0
6FC5197- AA50
7.2.2 FDD MD (data description - SW 3)
Active
at once
Units
V
Active
at once
Units
°C
Active
at once
Units
rev/min
7–71