3 holding brake – Siemens MICROMASTER 440 User Manual
Page 56
6 Commissioning
Issue 10/06
MICROMASTER 440
56
Operating Instructions (Compact)
6.4.18.3 Holding
brake
¾
Series / commissioning for hazardous loads
− lower the load to the floor
− when replacing the frequency inverter, prevent (inhibit) the frequency
inverter from controlling the motor holding brake (MHB)
− secure the load or inhibit the motor holding brake control (so that the brake
cannot be controlled) and then – and only then – carry-out quick
commissioning / parameter download using the PC-based tool (e.g.
STARTER, AOP)
¾
Parameterize the weight equalization for hoisting gear applications
− magnetizing time P0346 greater than zero
− min. frequency P1080 should approximately correspond to the motor slip
r0330 (P1080 ≈ r0330)
− adapt the voltage boost to the load
a) V/f (P1300 = 0 ...3): P1310, P1311
b) SLVC (P1300 =20): P1610, P1611
¾
It is not sufficient to just select the status signal r0052 bit 12 "motor holding
brake active" in P0731 – P0733. In order to activate the motor holding brake, in
addition, parameter P1215 must be set to 1.
¾
It is not permissible to use the motor holding brake as operating brake. The
reason for this is that the brake is generally only dimensioned/designed for a
limited number of emergency braking operations.
¾
The brake closing / opening times can be taken from the appropriate manual.
The following typical values have been taken from Motor Catalog M11
2003/2004, Page 2/51:
Motor size
Brake type
Opening time [ms]
Closing time [ms]
63 2LM8
005-1NAxx 25
56
71 2LM8
005-2NAxx 25
56
80 2LM8
010-3NAxx 26
70
90 2LM8
020-4NAxx 37
90
100 2LM8
040-5NAxx 43
140
112 2LM8
060-6NAxx 60
210
132 2LM8
100-7NAxx 50
270
160 2LM8
260-8NAxx 165
340
180 2LM8
315-0NAxx 152
410
200
225
2LM8 400-0NAxx
230
390
Holding brake enable
Enables/disables holding brake function (MHB).
0 Motor holding brake disabled
1 Motor holding brake enabled
NOTE
The following must apply when controlling the brake relay via a digital output: P0731 = 52.C
(= 52.12) (refer to Section 6.4.4 "Digital outputs (DOUT)").
0
P1215 =...