Siemens SINUMERIK 840C - Manual (Page 486)

09.95 7 Drive Machine Data (SIMODRIVE Drive MD)
7.2.2 FDD MD (data description - SW 3)
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: – Stored hardware sum signal
– Axial pulse enable by PLC via 611D control
word
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
DC link voltage 1701
Default value Lower output limit Upper output limit Units
0 0000 32 767 V
Active
at once
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
is measured continuously.
Motor temperature 1702
Default value Lower output limit Upper output limit Units
0 0000 32 767 °C
Active
at once
This machine data is used to display the motor temperature. The motor temperature is
measured by appropriate sensors and evaluated in the drive.
Speed setpoint 1706
Default value Lower output limit Upper output limit Units
0.0 0 32 767.0 rev/min
Active
at once
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 6FC5197- AA50 7–71
SINUMERIK 840C (IA)