Siemens SINUMERIK 840C - Manual (Page 553)

7 Drive Machine Data (SIMODRIVE Drive MD) 07.97
7.3.2 Drive MD (data description)
Response threshold dn/dt 1611
Default value Lower input limit Upper input limit Units
800 0 1 600 %
Active
at once
Input of response threshold for dn/dt monitoring function.
Caution:
This machine data is required for the load test. It is relevant only for internal Siemens
processes and must not be altered.
Config. shutdown react. PO alarms 1612
Default value Lower input limit Upper input limit Units
0DBC/FFFF 0000 FFFF Hex
Active
at once
Input bit field for switching over the appropriate 611D power ON alarm. It is possible to select
one of two shutdown reactions, i.e. pulse disable (bit = 1) or controller disable (bit ˆ
=0 =
n
set
ˆ =0 = generator-mode braking), i.e. when the pulse disable reaction is selected, the
controller disable reaction is deactivated. The default setting is dependent on the motor type
(FDD ˆ
=0D3C, MSD ˆ =FFFF) and is parameterized by the drive configuration during start-up.
Note:
The MSD default setting (FFFF) must be selected when the FDD H option is used.
Caution:
The alarms may be deactivated or concealed through machine data MD 1600 - Concealable
alarms (power ON), i.e. they may be inactive.
Value table:
Bit 0
Pulse disable in response to internal
errors/faults 1 = on
0 = off
Bit 1 Not assigned
Bits 2-5 Reserved
Bit 6 Pulse disable NC sign-of-life (as from SW 6)
1 = on (MSD)
0 = off (FDD)
Bit 7
Bit 8 Pulse disable, zero monitoring
1 = on
0 = off
Bit 9 Pulse disable, converter limit frequency
1 = on
0 = off
Bits 10-11 Reserved
Bits 12-14 Not assigned
Bit 15 Pulse disable, heat sink temperature
1 = on
0 = off
* ) As from SW 5.2 (840C) reserved; prior to SW 5.2 always bit 7=1
7–138 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)