Siemens SINUMERIK 840C Installation Instructions Manual page 486

09.95
Bit 0 Control unit enable (internal module function), including marking according to
MD 1003, bit 5
Bit 1 Image terminal 663 (module-specific pulse suppression IMPFR)
Bit 2 Image terminal 63/48 of I/RF unit (central drive pulse suppression REIMSP)
Bit 3 Sum signal pulse enable:
Bit 4 "Heat sink of power section XKKT too hot" message: Low active signal
Bit 5 Image terminal 112 of I/RF unit (set-up mode message XEINR):
Low active signal
Bit 6 Image terminal 64/63 of I/RF unit (Central drive enable setpoint = 0)
Bit 7 Not assigned
Bit 8 Image terminal 5 of I/RF unit (motor/power section temperature prewarning X12T):
Low active signal
Bits 9-15 Not assigned
1701
Default value
0
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
DClink
1702
Default value
0
This machine data is used to display the motor temperature. The motor temperature is
measured by appropriate sensors and evaluated in the drive.
1706
Default value
0.0
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.
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
– Stored hardware sum signal
– Axial pulse enable by PLC via 611D control
word
DC link voltage
Lower output limit Upper output limit
0000
is measured continuously.
Motor temperature
Lower output limit Upper output limit
0000
Speed setpoint
Lower output limit Upper output limit
0
6FC5197- AA50
7 Drive Machine Data (SIMODRIVE Drive MD)
7.2.2 FDD MD (data description - SW 3)
32 767
32 767
32 767.0 rev/min
Active
at once
Units
V
Active
at once
Units
°C
Active
at once
Units
7–71