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3-34 Basic Installation
MN1943
3.7.6 Motor brake connection
You might wish to wire a motor’s brake, via a relay, to a digital output on connector X3 (see
sections 5.3.6 and 5.3.7). This allows the MotiFlex
e
100 to control the motor’s brake. A typical
circuit is shown in Figure 19.
C
D
from motor brake
connections
Separate
customer
supplied
24VDC supply
X3
3
DOUT1-
Relay
+24VDC
0V
The inner shield
surrounding the
brake wires should
be earthed/grounded
at one point only.
The relay has normally open
contacts and is shown deactivated
(contacts open, brake engaged).
15
DOUT1+
User
supply
V+
User
supply
GND
Figure 19 - Motor brake control circuit
The 24 VDC power supply must be a separate supply as shown in Figure 19.
Do not use the ‘user supply’ powering the MotiFlex
e
100 digital outputs, or the
internally generated 18 VDC supply. The brake wires often carry noise that
could cause erratic drive operation or damage. The brake contacts must never
be wired directly to the digital outputs. The relay and motor brake terminals
should be fitted with protective flyback diodes, as shown in Figure 19.
This circuit uses a special motor brake output, configured using
MOTORBRAKEOUTPUT
to appear
on DOUT1. The operation of the motor brake output is synchronized with the application of power
to the motor and the enabling / disabling of the drive. Configurable delays are included to allow
time for the relay contacts and the brake to engage or release (see
MOTORBRAKEDELAY
in the
Mint help file). This system allows controlled operation of suspended or tensioned loads that are
held by the brake. For example:
To engage the brake:
H
The motor is brought to rest under normal control, but remains powered;
H
The relay is deactivated, causing the brake to engage;
H
Power is removed from the motor;
H
The drive is disabled.
To disengage the brake:
H
The drive is enabled;
H
Power is applied to the motor to hold position under normal control;
H
The relay is activated, causing the brake to be disengaged;
H
Motion starts.
WARNING
Summary of Contents for MotiFlex e100
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Page 136: ...www baldormotion com 7 8 Troubleshooting MN1943 ...
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Page 188: ...www baldormotion com B 6 Control System MN1943 ...
Page 204: ...www baldormotion com C 16 Mint Keyword Summary MN1943 ...
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Page 218: ...www baldormotion com Comments MN1943 Thank you for taking the time to help us ...
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