NSK MEGATORQUE M-ESB-YSB2020AB300 - Brake-Off (CLCN) Input

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7.1. General Operation and Function
7.1.7.Brake-off (CLCN) Input
7.1.7. Brake-off (CLCN) Input
l This is a function for a Motor equipped with brake. Refer to “7.1.10. Brake” for the brake.
l This function is effective when the brake sequence is selected, that is to say, when the parameter
settings are TY8 and BF1 for the B3 and 23 type Driver Units. This function is also effective for
the B5 and 25 type Driver Units when the parameter BF1 is specified.
l The brake is off when the CLCN input is ON, thus closing the BRKC output.
l The brake must be off by activating the CLCN signal ON before performing Jog, pulse train
command or analog command operations. The brake error (A8) alarm arises when one of above
operations starts leaving the CLCN input is OFF (brake-on).
l When the CLCN input is changed to OFF from ON in the middle of above operations, the
System interrupts the operation, the Motor brakes, and then the brake error alarm arises.
l The CLCN input does not need to be ON in case of Home Return, Programmable Indexer
positioning operation or RS-232C communication positioning operation. The System controls
the brake sequence function along the Motor motion.
Figure 7-8: CLCN input signal timing in Jog operation
Jog direction
(DIR input)
Brake control
signal
(BRKC output)
Motor motion
Brake-on
Brake-off
Velocity loop
Integration
Brake action
Inactive
Active
Motor motion
WU
WC
ON
OFF
ON
OFF
Brake power on
Brake power off
Closed
Open
Integration active
Integration
inactive
Brake-off
Brake-on
Jog
(JOG input)
ON
OFF
Brake off
(CLCN input)
Brake error (A8) alarm arises.