Mitsubishi Electric LE-40MT Series Handbook page 15

Tension control output for powder clutch/brake
The rated current of LE-40MTA and LE-40MTB(-E) is 4.0 A, and the rated current of LE7-40GU-L is 2.7 A.
When the powder clutch whose rated current exceed 2.7 A is used, an amplifier for clutch (separately sold) is necessary.
Control output signal
2
When "powder" has been selected with the LE-40MTA, B(- E), set the control output mode to 0 to 5 V. When "servomotor" has
been selected, set the control output mode to -5 to +5 V DC.
Tension detector input
The tension detector that has been used with the LE-40MTA, B(- E) can be used as is. A strain gauge type load sensor can
also be used with the LE7-40GU-L.
When substituting for the LE-40MTA, B(-E), it is necessary to change the [white] - [green (blue)] wiring if the tension detector
has been used in the pulling direction. When substituting for the LE7-40GU-L, however, it is unnecessary to change the wiring
and operation is enabled even if wiring is made to the terminal of the color indicated by the terminal block.
Also, when using one tension detector with the LE-40MTA, B(-E), the tension detector is connected between the right input
[WHR] and [GRR] and the line between [WHL] and [GRL] is shorted. With the LE7-40GU-L, however, the detector is
connected to the input of either left or right tension detector and the opposite input is shorted and used. When a single tension
detector is used, left and right imbalance or small load alarm will be generated during span adjustment, but ignore it and use
the detector.
Analog input
When it is used for general-purpose input, function assignment is required (same as the AI2 and AI3 terminals of the LE-
40MTA, B(-E). Be aware that even if the LE-40MT mode is set, the external tension setting (the function of the AI1 terminal of
LE-40MTA, B(-E)) will not be automatically assigned.
For details of function assignment in each operation mode, refer to the following.
LE7-40GU-L APPLICATION MANUAL
Analog output
When LE-40MT mode is selected in the initial setting mode, the same voltage range and function assignment as the LE-
40MTA, B(-E) are used.
However, when it is used in operation mode 8, the A-reel shaft rotational speed output and the B-reel shaft rotational speed
output are assigned to the AO1 and AO2 terminals, respectively.
For details of function assignment in each operation mode, refer to the following.
LE7-40GU-L APPLICATION MANUAL
Contact input
When LE-40MT mode is selected in the initial setting mode, the same input as the LE-40MTA, B(-E) can be used.
Since LE7-40GU-L has the sink/source switching function, it is recommended to use sink wiring when replacing from LE-
40MTA, B(-E). Note that stall memory and output gain operation are different.
Page 20 DIFFERENCES IN SEQUENCE OPERATION
For details of function assignment in each operation mode, refer to the following.
LE7-40GU-L APPLICATION MANUAL
Contact output
When LE-40MT mode is selected in the initial setting mode, the same output as the LE-40MTA, B(-E) can be used.
The LE-40MTA uses a relay output, but the LE7-40GU-L has changed to an open collector transistor output. When ZT (zero
tension detection output) is used, pay attention to the power supply (AC, DC) and current direction after replacing to the LE7-
40GU-L.
For details of function assignment in each operation mode, refer to the following.
LE7-40GU-L APPLICATION MANUAL
2 TRANSITION FROM LE-40MTA, B(-E) TO LE7-40GU-L
13
2.2 Comparison of I/O Terminal Blocks