Emotron EMX-B, Instruction Manual

Page: 31 / 60

CG Drives & Automation 01-6048-01r3
Built-in functions 27
3.5 Defrosting
Short terminal 33 and terminal 35 to activate defrosting mode. During this
mode the speed on the motor will be 4 rpm. In this case the incoming control
speed is ignored and instead 4 rpm is prioritized.
3.6 Manual control using a 10 kOhm
potentiometer
It is easy to control the drive system manually by using a 10 kOhm
potentiometer connected as shown in the figure below.
Fig. 11 Manual control using potentiometer
3.7 Test Switch
The control unit is equipped with a test switch, placed on the control board see
Fig. 5, page 16 and Fig. 6, page 17. When this switch is in the “ON” position
(up), the motor soft starts and the speed increases to the maximum,
independently of other signal sources. When in the “OFF” position (down), the
control unit goes back to normal operation.
The test switch can also be used to run the motor at maximum speed if, for
example, an external control signal is missing.
3.8 Cooling recovery
By shorting terminal 34 and terminal 35, the system will go into cooling
recovery. This means that the system will run at maximum speed.
Control unit
10 kOhm