Parker Hannifin
Chapter 3 Electrical Installation - 35 -
Brake Relay Connection
On all models, the two BK terminals are optically isolated from the
drive/controller’s internal logic.
Figure 19 Typical Brake Relay Connection on the Output Power Connector
Brake Relay to Motors with Full Wave Rectifiers
Some Parker brake motors (BE, SM, SE, NeoMetric, MPP, and J series
motors, serial numbers 010904xxxxx and greater) contain full wave rectifiers,
so connection polarity is not an issue during installation.
1. Connect one red/blue brake wire (Parker Motor cable or equivalent) to
one BK terminal.
2. Connect the second red/blue brake wire (Parker Motor cable or
equivalent) to the 24V return on the power supply.
3. Connect the +24 VDC power supply to the second BK terminal.
Warning — You must connect the drive/controller’s protective conductor terminal,
marked with the earth symbol
, to a reliable system Protective Earth.
Warning — The drive/controller’s connector strip terminals have hazardous
voltages when power is applied, and up to several minutes after power is removed.
Lower voltages may still be present for several minutes after power is removed.
During normal operation, these high voltage terminals must not be accessible to
the user.
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