6-7-9 Interlock Function with Simple Position Control and Brake Control
The interlock function with simple position control and brake control is useful in applications where
brake control is required, such as an elevator or equipment that must be kept in the stop position.
Set the Simple Position Control Selection (P012) to 02 (Simple position control enabled), and the Brake
Control Function Selection (b120) to 01 (Enabled: DC Injection Braking enabled during stop) to auto-
matically interlock the simple position control with brake control.
The interlock function with simple position control and brake control is enabled only for the 1st Control
Method (A044).
The diagram below shows the operation sequence of the interlock function with simple position control
and brake control.
Note The above sequence chart shows an example when one of the Multi-function Input 1 to 7 Selection
(C001 to C007) is set to 44 (BOK: Brake confirmation).
⚫
During acceleration
(1)
The interlock function with simple position control and brake control starts when the
RUN command (forward or reverse) turns ON.
The inverter starts its output and accelerates to the frequency set in the Creep Speed Set-
ting (P015).
The inverter judges the direction of movement based on the current position and the target
position, regardless of the RUN command.
Or, if the current position is within the range set in the Positioning Completion Range Setting
(P017), it stops there without releasing the brake. Whether or not the inverter switches to the
DC injection braking mode depends on the Brake Control Function Selection (b120) setting.
(2)
After reaching the frequency set in the Creep Speed Setting (P015), 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 did not reach the Brake Release Current (b126) when output-
ting 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).
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