ABB Baldor BC142-5 Installation & Operating Manual - Page 12
Browse online or download pdf Installation & Operating Manual for Control Unit ABB Baldor BC142-5. ABB Baldor BC142-5 20 pages. Dc control
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Notes:
1. If an isolated signal input is not available, or if using a 4 - 20 mA DC signal input, install the
optional plug-on Catalog No. BC152 Signal Isolator. This will also allow direct connections to
process controllers and microprocessors.
2. If multiple follower motors are to be controlled from a single leader motor or a single Main Speed
Potentiometer, install the optional Catalog No. BC145 Signal Isolator.
3. Terminal F- may be used in lieu of Terminal P1.
Enable Circuit Connection
Opening the Enable Circuit will not stop the drive if the Min Trimpot and/or the Main Input Speed
Signal is not at Zero Setting.
The Enable Circuit is never to be used as a Safety Disconnect since it is not fail-safe.
The control can be started and stopped with an Enable Circuit (close to run), as follows.
Enable Switch or Contact Wired to the Enable Connector
Using the wired mating connector that is supplied with the control, connect the switch or contact to
the Enable connector (CONN1). When the switch or contact is closed, the motor will accelerate to the
Main Speed Potentiometer setting. When the switch or contact is opened, the motor will decelerate to
Stop. An open collector (PNP) can be used in lieu of a switch or contact.
Figure 2-5 Enable Switch Or Contact Wired To The Enable Connector
Notes:
1. To use the Enable Circuit, remove the jumper that is factory installed on CONN1.
2. The deceleration time can only be made longer than the normal coasting time of the load.
Enable Switch or Contact Wired to the Main Speed Potentiometer
Connect the switch or contact in series with the Main Speed Potentiometer high side and Terminal P3
on the control. Be sure the jumper is installed on the Enable Connector (CONN1). When the switch or
contact is closed, the motor will accelerate to the Main Speed Potentiometer setting. When the switch
or contact is opened, the motor will decelerate to the MIN Trimpot setting (factory set to 0 Volts DC). If
the MIN Trimpot is set to other than 0 Volts DC, the motor will run at the MIN speed setting when the
switch or contact is opened. An open collector (PNP) can be connected in lieu of a switch or contact.
MN704
Figure 2-4 Voltage Following Connection
Remove this jumper to install
the Mating Connector
Enable Switch
or Contact
(Close to Run)
(Open to Stop)
MAX
P2
P3
P1
MAX
+
0 - 9 Volts DC
V
(Isolated)
-
Open Collector
(On to Run)
)
MAX
Terminal "P2"
Terminal "P1"
MAX
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