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MELSEC-Q

 

3   SPECIFICATIONS AND FUNCTIONS 

 

3.4 Specifications of interfaces with external devices 

3.4.1 Electrical specifications of input signals 

 Input specifications 

 

Signal name 

Rated input 

voltage/current 

Working 

voltage range 

ON 

voltage/current 

OFF 

voltage/current 

Input 

resistance 

Response 

time 

Forced stop input 
signal (EMI) 
Upper limit signal 
(FLS) 
Lower limit signal 
(RLS) 
Stop signal (STOP) 

24VDC/5mA 

19.2 to 

26.4VDC 

17.5VDC or more/ 

3.5mA or more 

7VDC or less/ 
1.0mA or less  Approx. 6.8k

Ω  4ms or less 

5VDC/5mA 

4.5 to 6.1VDC 

2.5VDC or more/ 

1mA or more 

1VDC or less/ 
0.1mA or less  Approx. 1.2k

Ω  1ms or less 

1

 Pulse width 

            

4ms or more

2ms or more

2ms 
or more

(Duty ratio: 50%)

 

2

 Phase difference 

Manual pulse 
generator A phase 
(PULSE 
GENERATOR A) 
Manual pulse 
generator B phase 
(PULSE 
GENERATOR B) 

           

 

 

 

A phase

B phase

1ms or more

 

When the A phase leads the B phase, the 
positioning address (current value) increases. 

Near-point dog signal 
(DOG) 
External command 
signal (CHG) 

24VDC/5mA 

19.2 to 

26.4VDC 

17.5VDC or more/ 

3.5mA or more 

7VDC or less/ 
1.0mA or less  Approx. 6.8k

Ω  1ms or less