4 Automatic tension control
4.1.1 Tension sensor connections
4.1 Tension measurement
[1] Assure that the mounting and connection of the tension controller is completed and correct, and switch on
the power.
[2] Assure that the mounting and connection of the tension sensor is correct, check the output signal of the
tension sensor.
[3] Set the tension measurement related parameters to proper value.
[4] Make zero and span calibration and check whether the display of the measured tension is correct, if not,
go to step [2].
[5] Test the tension measurement and driving system in manual operation mode.
[6] Switch to automatic mode, set proper value for operation parameters to get the stable control of the web
tension.
GRR
WHR
REDR
BLKR
Right
Tension
Sensor
power+(red)
signal
+(
green
)
signal
-(
white
)
power
-(
black
)
REDL
GRL
WHL
BLKL
power
+(
red
)
signal
+(
green
)
signal
-(
white
)
power
-(
black
)
Jumper settings
Tension sensor connections
Jumper storage position
Left
Tension
Sensor
Note:
The color of the wire is optional, please
refer to the sensor's manual for proper
connection.
The controller may be used with micro-displacement based tension sensor and strain gauge based tension
sensor. The jumpers JP7, JP8 and J8 must be in the proper position for correct measurement.
1. Using micro-displacment based tension sensor,
The signal range is 200mV, powered by 5V DC.
Please short-circuit jumpers JP7, JP8, jump J8 to +5V.
2. Using strain gauge based tension sensor
,
e.g. the
The signal
range is 20mV,
powered by 10V DC.
Please open jumpers JP7, JP8, jump J8 to +10V.
3. In dancer control systems(using 2K Ohm potentiometer), please short-circuit jumpers L1 (provides
constant current source for pot.), JP7 and JP8.
e.g. the LX series tension sensor(compatible with the Mitsubishi
tension sensor).
SUP and the CTS/HTS series tension sensors.
Please debug by stepping through the following steps:
Tension Controller TC818
11
JP7 JP8
L1 L2
J8
+5V
R1
R2
R4
R3
+10V
2K Potentiometer
GRL
WHL
