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3 PART NAMES
3.2 Base Unit
3.2 Base Unit
Main base unit
This section describes the part names of the main base unit. (The R312B is used as an example.)
For the redundant power supply main base unit, the power supply module mounted on the left power supply slot is POWER 1,
and the power supply module mounted on the right power supply slot is POWER 2. This number is used to recognize the
redundant power supply module when the special relay or special register is used.
No. Name Description
(1) Extension cable connector (OUT) A connector for connecting to an extension base unit. A MELSEC iQ-R series extension cable is connected
here.
When no cable is connected, attach the supplied extension connector cover to prevent entry of foreign matter
such as dust.
(2) Extension connector cover A protective cover for the extension cable connector
(3) Module connector A connector for mounting MELSEC iQ-R series modules.
Attach a blank cover module (RG60) to a connector where no module is mounted to prevent entry of foreign
matter such as dust.
(4) Module fixing hole A screw hole to fix a module to the base unit (M312 screw)
(5) Base unit installation hole A hole to install a base unit to a control panel (M4 screw)
(6) DIN rail adapter mounting hole A hole to mount a DIN rail adapter
(7) Guide A guide to mount a module to the base unit
(8) Production information marking Shows the production information (16 digits) of the module.
(9) 10m mark Indicates that the base unit supports the ten-meter extension cable (RC100B).
(5) (9) (4)
(6)
(8)
(3) (7)
(1) (2)
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