Mitsubishi Electric MELSEC Q Series User Manual page 58

4 INSTALLATION, WIRING, START-UP, AND MAINTENANCE
Securely connect the connector for SSCNET cable to the bottom connector on the module.
Be sure to connect SSCNET cable with the connector. If the connection is mistaken, between the
QD74MH and servo amplifier cannot be communicated.
After removal of the SSCNET cable, be sure to put a cap on the SSCNET connector. Otherwise,
adhesion of dirt deteriorates in characteristic and it may cause malfunctions.
Do not remove the SSCNET cable while turning on the power supply of QD74MH and servo
amplifier. Do not see directly the light generated from SSCNET connector and the end of SSCNET
cable. When the light gets into eye, may feel something is wrong for eye. (The light source of
SSCNET cable complies with class1 defined in JISC6802 or IEC60825-1.)
If the SSCNET cable is added a power such as a major shock, lateral pressure, haul, sudden
bending or twist, its inside distorts or breaks, and optical transmission will not be available. Be sure to
take care enough so that the short SSCNET cable is added a twist easily.
(4) Precautions for handling the SSCNET
• Do not stamp the SSCNET cable.
• When laying the SSCNET cable, be sure to secure the minimum cable bend
radius or more. If the bend radius is less than the minimum cable bend radius,
it may cause malfunctions due to characteristic deterioration, wire breakage,
etc.
• For connection and disconnection of SSCNET cable, hold surely a tab of
cable connector.
(a) Connection of SSCNET cable
• For connection of SSCNET cable to the QD74MH, connect it to the
SSCNET connector CN1 of QD74MH while holding a tab of SSCNET
cable connector. Be sure to insert it until it clicks.
• If the cord tip for the SSCNET cable is dirty, optical transmission is
interrupted and it may cause malfunctions. If it becomes dirty, wipe with a
bonded textile, etc. Do not use solvent such as alcohol.
(b) Disconnection of SSCNET cable
• For disconnection of SSCNET cable, pull out it while holding a tab of
SSCNET cable connector or the connector.
• After disconnection of SSCNET cable, be sure to put a cap (attached to
QD74MH or servo amplifier) to the QD74MH and servo amplifier.
• For SSCNET cable, attach the tube for protection optical cord's end face
on the end of connector.
QD74MH
CN1
CAUTION
4 - 9
MELSEC-Q
cable