Interlock Function With Simple Position Control And Brake Control - Omron MX2 Series User Manual

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Interlock Function with Simple Position Control and Brake Control

The 3G3MX2-V1 Series Inverter has the interlock function with simple position control and brake control.
This function is useful in applications where brake control is required, such as an elevator or equipment
that must be kept in the stop position.
Operation Sequence of Brake Control Function
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.
When the position command value
is small, the inverter starts decelerat-
ing before it reaches the speed ref-
erence. The brake force sequence is
same.
Creep Speed Setting
(P015)
Output frequency
RUN command
(FW input)
Brake release signal
(BRK output)
Brake confirmation
signal
(BOK input)
Note The above sequence chart shows an example when one of the Multi-function Input S1 to S7 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.
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
(1)
(2)
Brake Release Wait Time
b121
(4)
Acceleration Wait Time
b122
on Brake Control
(3)
Brake Error Detection Time
b124
6 Vector Control and Applied Functions
Amount of decelerating movement for
the set deceleration time
Creep Speed Setting (P015)
Creep Speed Moving Amount
(P014)
Decelerates again
(7)
DC injection braking
(8)
(5)
Stop Wait Time on Brake Control
b123
(6)
Brake Error Detection Time
b124
(Brake error).
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