Control Techniques Commander SE Advanced User's Manual page 169

12.10.2 Brake set-up 2
The following set-up is an alternative to the set-up on the previous page.
Great care should be taken when implementing a brake control set-up as this may cause a safety issue
depending on the application, e.g. crane. If in any doubt, please contact the supplier of the drive for
advice and information.
WARNING
Frequency Reference
Usually by analog reference of preset speeds. The run forward and/or run reverse inputs must be used to change the
direction of motor rotation. Changing the direction of rotation by the sign of the analog input is not advisable for safety
reasons.
Brake Control
IMPORTANT INFORMATION!
• Connect a +24V interface relay to the Commander SE according to the connection diagram on the following page.
• Control the brake contactor according to the diagram on the following page.
• The programming of the Drive Healthy relay should not be changed, it should remain as a Drive Healthy relay.
• Make sure that the Drive Healthy relay of the Commander SE inhibits the brake contactor.
• Use a separate overspeed detection which is integrated into the emergency stop circuit.
• Use DC control of the brake coil to improve brake response.
• Fast ramps must be selected to stop extended travel due to the drives internal DC bus controller becoming active and
increasing the ramp times automatically.
Commissioning and drive set-up
• Connect the Commander SE according to the connection diagram on the following page.
• Disconnect the coil connecting the brake contactor.
• Program the following parameters:
02 = set the appropriate motor rated frequency
06 = set the appropriate motor rated current
07 = 0 disable slip compensation
08 = set the appropriate motor rated voltage
09 = set the appropriate motor rated power factor
30 = 0 (FASt) Set fast ramps
8.21 = 9.01
9.04 = 12.01
9.06 = 10.03
9.07 = 1
12.03 = 4.01
• Calculate and program parameter 3.05 - Zero speed threshold
3.05 = ((N
sync
Example
Motor rated speed of 1440 rpm
3.05 =((1500-1440) / 1500) x 50 = 2Hz
• Calculate and program parameter 15 - Jog reference
15 = 3.05 + 0.5
Example
15 = 2 + 0.5 = 2.5Hz
• Calculate and program parameter 12.04 - Threshold detector level
12.04 = (I rated motor / I rated Commander SE) x 25
• Program parameter 12.05, Threshold detector hysteresis, with the value of parameter 12.04
• Program parameter 01, minimum speed, with the value of parameter 15
• If 2 preset speeds are used, the high speed will be selected by terminal 12 and the following parameters will need to be
programmed:
8.39 =1
1.14 = 3
8.25 = 1.45 Terminal 12 destination to select preset select bit 0
11
12
• Press the red stop/reset button on the drives keypad and reconnect the coil of the brake contactor
• Perform an autotune by setting parameter 38 = 1.
• Run the drive and tune/adjust the acceleration ramps in parameters 03 and 04.
• Perform a Save routine: xx.00 = 1000 and press red Stop / Reset button on the drive
Commander SE Advanced User Guide
Issue Number: 4
Digital output source from programmable logic output indicator
Programmable logic source 1 from programmable threshold indicator
Programmable logic source 2 from zero speed indicator
Programmable logic source 2 invert
Threshold detector source from motor current magnitude
- N ) / N ) x 50
rated sync
Disable digital inputs 5 and 6 auto select
Reference selector to select preset speeds
Required low speed into preset speed 1
Required high speed into preset speed 2
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