Brake Control Function; Operation Sequence Of Brake Control Function - Omron MX2 Series User Manual

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Brake Control Function

The 3G3MX2-EV2 Series Inverter has a built-in brake control function for an elevating system etc.
Use this function to control the external brake used in an elevating system etc. from the inverter.
The brake control function can be used independently of the 1st/2nd Control Method (A044/A244)
Selection.
You can combine this function with the simple position control function.
For how to combine this function with simple position control, refer to 6-7-9 Interlock Function with Sim-
ple Position Control and Brake Control on page 6-50.
This section describes the operation sequence and settings of the brake control function.
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Operation Sequence of Brake Control Function

Below is the sequence chart for the brake control function, followed by the description of each operation
in the sequence.
Output frequency
(1)
RUN command
(FW input)
Brake release signal
(BRK output)
Brake confirmation signal
(BOK input)
Note The above sequence chart shows an example where one of the Multi-function Input 1 to 7 Selection
(C001 to C007) is set to 44 (BOK: Brake confirmation).
⚫ During acceleration
(1) When the RUN command turns ON, the inverter starts output and accelerate to the
Brake Release Frequency (b125).
(2) After reaching the Brake Release Frequency, the inverter waits until the Brake
Release Wait Time (b121) elapses and outputs the brake release signal (C021, C022,
C026 = 19: BRK).
However, if the output current does not reach the Brake Release Current (b126) when out-
putting the brake release signal, the inverter outputs the brake error signal (C021, C022,
C026 = 20: BER) without releasing the brake, and detects the E36. (Brake error).
(3) After outputting the brake release signal, the inverter waits for the brake confirma-
tion signal (C001 to C007 = 44: BOK) to turn ON during the time set in the Brake Error
Detection Time (b124).
If the brake confirmation signal does not turn ON within the time set in b124, the inverter
outputs the brake error signal (C021, C022, C026 = 20: BER) and detects the E36.
(Brake error).
If any of the Multi-function Input 1 to 7 Selection (C001 to C007) is set to 44 (BOK: Brake
confirmation), the Brake Error Detection Time (b124) setting is disabled and the inverter
proceeds to step (4) after outputting the brake release signal.
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)
(2)
Brak Release Wait Time (b121)
(4)
Acceleration Wait Time on
Brake Control (b122)
(3)
Brake Error Detection Time (b124)
6 Vector Control and Applied Functions
Brake Force Frequency
(b127)
(7)
(5)
Stop Wait Time on Brake
Control (b123)
(6)
Brake Error Detection Time (b124)
6
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