Справочник Пользователя для Mitsubishi Electronics MDS-R

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7. Wiring and Connection 
 
 
 
 
 
7 - 17
7-7-5  Monitor of contactor operation 
 
The contactor operation can be monitored by inputting the contactor B contact to the MDS-R-V1/V2 DI 
signal and setting the parameter. 
The contactor error alarm (5F) will occur if the contactor turns ON during READY OFF, or if the 
contactor turns OFF during READY ON. 
 
 
When using an internal power supply 
 
 
 
 
 
 
 
 
 
 
 
 
When using an external power supply 
 
 
Contactor
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
POINT
 
When the contactor or relay contact is used with a minute load, the contact's 
contactor resistance will increase, resulting in a higher fault rate. Add 
appropriate resistors so that the proper current is passed to the contactor in 
use, and then flow the current to the B contact. 
A current of approx. 5mA (at 24VDC) will flow if a resistor is not added. 
 
 
No. Abbrev.  Parameter 
name 
Explanation 
SV033  SSF2  Servo function  
 
 
 
selection  2 
 
E
D
C
B
A
9
8
7
6
1
0
 
   
 
  
zup
dis 
nfd2 nf3 nfd1 
 
 
 
 
 
  
 
 bit 
Explanation 
 
 
 
 
 
Select the digital signal input. 
 
  
 
 
dis
00: DI not used 
10: Reserved 
 
 
 
 
 
 
01: Contactor B contact input 
11: Reserved 
 
 
 
 
 
 
MDS-R-V1/V2 
10
VDD
5
COM
19
DI
3
SG
CN9
4.7k 
24VDC
 
L1
L2
L3
B contact
 
(Note)
 Refer to the "POINT" 
below.
 
Direction of 
current 
MDS-R-V1-V2 
10
VDD
5
COM
19
DI
3
SG
CN9
27VDC 
or less
Contactor
Direction of 
current 
4.7k 
24VDC
 
L1
L2
L3
B contact
 
(Note)
 Refer to the "POINT"
below.