Mitsubishi Electronics FX5U ユーザーズマニュアル

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6  WIRING
6.8  Examples of Wiring for Various Uses
High-speed counter
Examples of wiring for high-speed counters are shown below.
When capturing pulses of a response frequency of 50 to 200 kHz, refer to Page 86 In the case of capturing high-speed 
pulses.
For details on the high-speed counters, refer to MELSEC iQ-F FX5 User's Manual (Application).
For the programs, refer to MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks).
1-phase 1-count
The wiring examples in this section use the following settings. When settings other than those in the table are used, use the 
examples shown in the following figures as references for wiring.
The settings of the high-speed counters are set by using the parameter settings of the engineering tool.
For details, refer to MELSEC iQ-F FX5 User's Manual (Application).
Example of wiring
*1 The grounding resistance should be 100 
 or less.
CH to be used
Pulse input mode
External preset input External enable input Operation mode
CH1
1-phase 1-input (S/W)
Invalid
Invalid
Normal mode
24 V DC
CPU module
S/S
L
N
24V
0V
24V
Rotary encoder
Class D grounding
*1
Fuse
In the case of sink wiring
0V
X000
A phase
B phase
Z phase
• NPN open collector transistor output rotary encoder 
1.5 k
24 V DC
S/S
L
N
24V
0V
24V
Rotary encoder
In the case of source wiring
0V
X000
A phase
B phase
Z phase
CPU module
Class D grounding
*1
Fuse
• PNP open collector transistor output rotary encoder 
1.5 k