Emerson Unidrive M400 User Manual page 145

Safety Product Mechanical
information information installation
The brake control functions are provided to allow well co-ordinated operation of an external brake with the drive. While both hardware and
software are designed to high standards of quality and robustness, they are not intended for use as safety functions, i.e. where a fault or
failure would result in a risk of injury. In any application where the incorrect operation of the brake release mechanism could result in injury,
independent protection devices of proven integrity must also be incorporated.
WARNING
The control terminal relay can be selected as an output to release a brake. If a drive is set up in this manner and a drive replacement takes
place, prior to programming the drive on initial power up, the brake may be released.
When drive terminals are programmed to non default settings the result of incorrect or delayed programming must be considered. The use of
an NV media card in boot mode can ensure drive parameters are immediately programmed to avoid this situation.
WARNING
Figure 11-22 Brake function
Percentage
flux
05.034
90%
Current
magnitude
04.001
BC Lower Current
Threshold ( 12.043 )
Hysteriesis
BC Upper Current Threshold (
BC Lower Current Threshold (
Output
Frequency
OL mode
or RFC-A
05.001
mode
Estimated
Frequency
03.002
BC Brake Release
Frequency (
BC Brake Apply
Frequency (
BC Brake Apply
Through Zero
Threshold (
Unidrive M400 User Guide
Issue Number: 2
Electrical Getting Basic Running
installation started parameters the motor
+
_
OL mode
RFC-A
Mode
+
_
Latch
12.042 )
12.043 )
Drive Active
10.002
Modulus +
_
12.044 )
_
+
12.045 )
01.011
Reference On
+
_
12.051 )
NV Media Card
Optimization
Operation
Flux and
Current
Detection
BC Brake Delay
( 12.046 )
Post-brake Release
Delay ( 12.047
Frequency
Detection
Latch
The parameters are all shown in their default settings
Onboard Advanced
Technical data Diagnostics
PLC parameters
Ramp Hold
( 02.003 )
12.040
)
BC Brake
Release
Hold Zero
Frequency
( 06.008 )
Key
Input
Read-write (RW)
mm.ppp
terminals
parameter
Read-only (RO)
Output mm.ppp
parameter
terminals
UL listing
information
145