Mitsubishi Electric MELSEC Q Series Handbook page 171

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