Mitsubishi Electric MELSEC-Q Series - Page 171

5 REPLACEMENT OF BASE UNIT AND EXTENSION CABLE
5 - 6
(b) Comparison between A1S55B(-S1) and Q55B
(c) Comparison between A1S58B(-S1) and two Q55Bs
(d) Comparison between A1S58B(-S1) and Q68B (type requiring power supply module)
Item
Model
Precautions for replacementAnS/QnAS series Q series
A1S55B A1S55B-S1 Q55B
Number of mountable I/O
modules
5 modules can be mounted.
For precautions for replacement,
refer to Section 5.3.1.
The upgrade tool (base adapter)
with existing mounting holes is
available.
Extension base unit
Cannot be
connected.
Can be
connected.
Can be connected.
Internal current
consumption (5VDC)
-0.10A
Mounting hole size
6 bell-shaped hole
(For M5 screw)
M4 screw hole or 4.5 hole
(For M4 screw)
External dimensions 130(H)260(W)28(D)mm 98(H)189(W)44.1(D)mm
Panel installation
dimensions
240 110mm 167
80mm
Item
Model
Precautions for replacementAnS/QnAS series Q series
A1S58B A1S58B-S1 Q55B  2
Number of mountable I/O
modules
8 modules can be mounted.
5 modules
2 units can be
mounted.
For precautions for replacement,
refer to Section 5.3.1.
Extension base unit
Cannot be
connected.
Can be
connected.
Can be connected.
Internal current
consumption (5VDC)
-0.11A
 2 units
Mounting hole size
6 bell-shaped hole
(For M5 screw)
M4 screw hole or 4.5 hole
(For M4 screw)
External dimensions 130(H)365W)28(D)mm
(98(H)189(W)44.1(D)mm)
2
Panel installation
dimensions
345 110mm (167
80mm) 2
Item
Model
Precautions for replacementAnS/QnAS series Q series
A1S58B A1S58B-S1 Q68B
Number of mountable I/O
modules
8 modules can be mounted.
• The power supply module must
be mounted.
• For precautions for
replacement, refer to Section
5.3.1. The upgrade tool (base
adapter) with existing mounting
holes is available.
Extension base unit
Cannot be
connected.
Can be
connected.
Can be connected.
Internal current
consumption (5VDC)
-0.12A
Mounting hole size
6 bell-shaped hole
(For M5 screw)
M4 screw hole or 4.5 hole
(For M4 screw)
External dimensions 130(H)365(W)28(D)mm 98(H)328(W)44.1(D)mm
Panel installation
dimensions
345  110mm 306
80mm