Siemens SINUMERIK 840C - Manual (Page 571)

7 Drive Machine Data (SIMODRIVE Drive MD) 07.97
7.3.2 Drive MD (data description)
When DELTA is calculated, it must be taken into account that the torque setpoint limitation
m
set,limit
may change in cyclic operation. This limitation acts on the maximum speed difference
n
max
.
m
set, limit
IPO cycle
n
max
= –––––––––––––––––––––––x –––––––––––––––––––
n-controller P-gain Speed controller cycle
Since the speed setpoint is specified by the NC, there is an operating time between the 611D
speed controller and the NC which is taken into account in the DELTA calculation through
machine data "Op. time factor IPO/NREG cyc. f. RFG" (MD 1665).
DELTA = n
max
x MD 1665 (operating time factor)
Caution:
This machine data is relevant only for Siemens-internal purposes and must not be altered.
Status of binary inputs 1700
Default value Lower output limit Upper output limit Units
0000 0000 7FFF Hex
Active
at once
This machine data is used to display the status of the binary inputs.
Value table:
Bit 0 Control unit enable (internal module function), including marking
according to MD 1003, bit 5
Bit 1 Pulse enable (terminal 663) (module-specific pulse suppression)
Bit 2 Pulse enable (terminal 63/48) of I/RF unit (central drive pulse
suppression)
Bit 3 Sum signal HW pulse enable: – Stored hardware sum signal
– Axial pulse enable by PLC via
611D control word
Bit 4 Temp. monitor heat sink responded
Bit 5 Setup mode (terminal 112) of I/RF unit (set-up mode message)
Bit 6 Drive enable (terminal 64/63) of I/RF unit (Central drive enable setpoint
= 0)
Bit 7 Not assigned
Bit 8 Motor and power section temp. prewarning 0: off
1: on
Bits 9-15 Not assigned
0: off
1: on
DC link voltage 1701
Default value Lower output limit Upper output limit Units
0 0 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 V
DClink
is measured continuously.
7–156 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)