Справочник Пользователя для Mitsubishi Electronics MDS-D-SPJ3

6 - 9

When controlling a magnetic brake of a servomotor in DC OFF circuit, a surge absorber must be installed to 

protect the relay contacts and brakes. Commonly a varistor is used.

When a varistor is installed in parallel with the coil, the surge voltage can be adsorbed as heat to protect a 

circuit. Commonly a 120V product is applied. When the brake operation time is delayed, use a 220V product. 

Always confirm the operation with an actual machine.

Select a varistor with the following or equivalent specifications. To prevent short-circuiting, attach a flame 

resistant insulation tube, etc., onto the leads as shown in the following outline dimension drawing.

(Note 1) Selection condition: When ON/OFF frequency is 10 times/min or less, and exciting current is 2A or 

less

(Note 2) ERZV10D121 and ERZV10D221 are manufactured by Matsushita Electric Industrial Co., Ltd.

TNR10V121K and TNR10V221K are manufactured by MARCON Electronics Co., Ltd. 

Contact: Matsushita Electronic Components Co., Ltd: http://www.panasonic.co.jp/ maco/

MARCON Electronics Co., Ltd.   Telephone:   

(Kanto)03-3471-7041 (+81-3-3471-7041)

(Kinki) 06-6364-2381 (+81-3-6364-2381)

(Chubu) 052-581-2595 (+81-52-581-2595)

ERZV10D121, ERZV10D221

120

(108 to 132)

75

100

3500

2500

20

14.5

0.4

200

1400

220

(198 to 242)

140

180

3500

2500

39

27.5

0.4

360

410

Normally use a product with 120V varistor voltage. If there is no allowance for the brake operation 

time, use the 220V product. A varistor whose voltage exceeds 220V cannot be used, as such varistor 

will exceed the specifications of the relay in the unit.

[Unit:mm]

Insulation tube

11.5

20.0