Data Sheet

4 SDC3260 Motor Controller Datasheet Version 1.3 January 23, 2018
Motor 1
VMot
PwrCtrl
SW1 Main
On/Off Switch 1A
F2
1A
Diode
>10A
Resistor
1K, 0.5W
+-
SW2
Emergency
Contactor or
Cut-off Switch
F1
M1+
M1-
M2+
M2-
I/O Connector
Ground
Ground
Motor 2
M3+
M3-
Motor 3
Main
Battery
Backup
Battery
Note 5
Do not Connect!
Note 1
Note 4
2 etoN 3 etoN
FIGURE 2.
FIGURE 2. Powering the Controller. Thick lines identify MANDATORY connections
Important Warning
Carefully follow the wiring instructions provided in the Power Connection section of
the User Manual. The information on this datasheet is only a summary.
Mandatory Connections
It is imperative that the controller is connected, as shown in Figure 3, above,in order to
ensure a safe and trou ble-free operation. All connections shown as thick black lines are
mandatory. The controller must be powered On/Off using switch SW1 on the Pwr Ctrl ter-
minal. Use a suitable high-current fuse F1 as a safety measure to prevent damage to the
wiring in case of major controller malfunction.
Emergency Switch or Contactor
The battery must be connected in permanence to the controller’s VMot terminal via a
high-power emergency switch or contactor SW2 as additional safety measure. The user
must be able to deactivate the switch or contactor at any time, independently of the con-
troller state.
Precautions and Optional Connections
Note 1: Backup battery to ensure motor operation with weak or discharged batteries, con-
nect a second battery to the Power Control wire/terminal via the SW1 switch.
Note 2: Use precharge 1K, 0.5W Resistor to prevent switch arcing.
Note 3: Insert a high-current diode to ensure a return path to the battery during regenera-
tion in case the fuse is blown.
Note 4: Users have the option to ground the VMot terminal when the controller is Off if
there is any concern that the motors could be made to spin and generate voltage in ex-
cess of 60V.