3 - 3
3. SIGNALS AND WIRING
Note 1. To prevent an electric shock, a lways connect the protective eart h (PE) terminal (terminal m arked ) of
the servo amplifier to the protective earth (PE) of the control box.
2. Connect the diode in the correct direction. If it is connected reversely, the servo am plifier will be
faulty and will not output signals, disabling the forced s top (EM1) and other protective circuits.
3. If the controller does not have an emergency stop func tion, always install a forced stop s witch
(Normally closed).
4. When a personal computer is connected for use of the test operation m ode, always use the
maintenance junction card (MR-J2CN3TM) to enable the us e of the forced stop (EM1). (Refer to
section 12.1.6)
5. CN1A, CN1B, CN2 and CN3 have the same shape. Wrong connec tion of the c onnector s will lead to
a fault.
6. The sum of currents that flow in the external relays shou ld be 80mA max.
7. When starting operation, always turn on the forced stop (EM1) . (Normally closed contacts) By
setting “0001” in parameter No.23, the forced stop (EM1) can be m ade invalid.
8. When connecting the personal computer together with analo g monitor outputs 1, 2, use the
maintenance junction card (MR-J2CN3TM). (Refer to Sectio n 12.1.3.)
9. Use MRZJW3-SETUP151E.
10. Use the bus cable at the overall distance of 30m(98.4f t) or less. In addition, to improve nois e
immunity, it is recommended to use a cable clamp and d ata line filters (three or four filters
connected in series) near the connector outlet.
11. The wiring of the second and subsequent axes is omitted.
12. Up to eight axes (n 1 to 8) m ay be connected. The MR-J2S- B/MR-J2-03B5 servo amplifier may
be connected on the same bus.
13. Always insert the termination connector (MR-A-TM) into CN1B of the servo am plif ier locate d at the
termination.
14. The bus cable used with the SSCNET depends on the precedi ng or su bsequ ent co ntroller or s ervo
amplifier connected. Refer to the following table and cho ose the bus cable.
MR-J2S- B MR-J2-03B5
QD75M MR-J2HBUS M
Q172CPU(N) Q172J2BCBL M(-B)
Q173CPU(N) Q173J2B CBL M
Motion
controller A motion MR-J2HBUS M-A
MR-J2S- B MR-J2-03B5
Maintenance junction card MR-J2HBUS M
15. When the A1SD75M (AD75M) is used as the controller , encoder pulses may not be output
depending on the software version of the controller. For details, r efer to the A1SD75M (AD75M)
Manual.