Connecting With Cc-Link Dedicated Cables; Precautions For Wiring Power Supply - Mitsubishi Electric MELSEC Q Series User Manual

5
SETTINGS AND PROCEDURES BEFORE
OPERATION
5.4.5
Figure 5.20 shows how safety relay modules are connected with CC-Link dedicated
cables.
Master module
DA
Terminating
resistor
DB
DG
SLD
5.4.6
When wiring to the power supply of safety relay module, take care of the following points.
5
- 29 5.4 Wiring

5.4.5 Connecting with CC-Link dedicated cables

Connecting with CC-Link dedicated cables
safety relay module
(Blue)
(White)
(Yellow)
Figure 5.20 Connecting with CC-Link dedicated cables
POINT
(1) Connect the shielded wire of the CC-Link dedicated cable to SLD terminals of
each module, and ground the both ends to the protective ground conductor
via FG terminals.
The SLD and FG terminals are connected inside the module.
(2) Always connect terminating resistor to both ends of the module on data link.
Connect terminating resistor between DA and DB terminals.

Precautions for wiring power supply

• Cable length of the module power supply must be within 10m (32.81 feet) or less.
• The power supply to be connected to the safety relay module must meet the
following conditions.
1) The switching power supply complies with the EMC Directive, EN50178,
EN60950-1 standard, and NEC CLASS2.
2) SELV (Safety Extra Low Voltage): Reinforced insulation from hazardous
potential area (48V or more) is provided.
3) The power supply complies with the LVD Directive.
4) The output voltage specification value is from 20.4 to 26.4VDC (ripple ratio
within 5%).
• Use respective power supply for the module power supply and the safety power
supply in order to obtain safety approval.
• Operating voltage range may differ for each module. Be careful with that when
sharing the power supply wiht other Q/QS series modules.
CC-Link
DA
DB
DG
SLD
CC-Link
safety relay module
DA
DB
Turn ON the CC-Link
DG
terminating resistor
SLD setting switch "LT".