Performance Specifications - Mitsubishi Electric MELSEC-Q Series User Manual

2.2

Performance Specifications

2.2.1
Performance specifications
Item
Transmission clock
Maximum transmission distance
(total length)
Number of connected slave
modules (varies depending on
the current consumption of
each slave module)
Transmission system
Connection type
Transmission protocol
Error control
Number of connected I/O points
RAS function
Transmission cable (D, G)
Power cable (24V, 0V)
*3
Power supply
Number of I/O occupied points
Number of writes to EEPROM
External dimensions
Weight
*1 Up to 64 modules can be connected within 2km.
*2 Used when required in special situations.
*3 When setting the transmission clock of the QJ51AW12D2 with a serial number whose sixth digit is 5 or earlier to 125kHz,
use the module within the following specified range.
• Voltage range of external power supply: 21.6 to 25.2VDC
• Operating ambient temperature: 0 to 50
20
QJ51AW12D2
*3
31.3kHz 7.8kHz
125kHz
50m 200m
Up to 128 Up to 128 Up to 128
Cyclic transmission with full-duplex mode
Bus topology (Multidrop system, T-branch system, tree branch system)
Dedicated protocol (AnyWire DB A20)
Double check system
Up to 1024 points (512 input points/512 output points)
(However, up to 1024 input points/1024 output points can be set)
Disconnected transmission cable location detection function, transmission cable short detection function,
transmission cable power supply voltage drop detection function
• UL-compliant general-purpose 2-/4-wire cable (VCTF, VCT 0.75 to 1.25, temperature rating: 70
or higher)
• UL-compliant general-purpose wire (0.75 to 1.25, temperature rating: 70 or higher)
• FK4-UL075-100 (AnyWire) (0.75, temperature rating: 90) (UL-compliant item)
(Regardless of the type of the transmission cable, when the transmission distance exceeds 200m, use
wires with a diameter of 0.9 to 1.25.)
• UL-compliant general-purpose 2-wire cable (VCTF, VCT 0.75 to 2.0, temperature rating: 70 or
higher)
• UL-compliant general-purpose wire (0.75 to 2.0, temperature rating: 70 or higher)
• FK4-UL075-100 (AnyWire) (0.75, temperature rating: 90) (UL-compliant item)
Circuit:
(Supplied from the Q bus side) Voltage +5V5%,
Current 0.5A max.
Transmission cable:
Voltage 24VDC +15 to -10% (21.6 to 27.6VDC),
ripple voltage 0.5Vp-p or lower
Current 0.5A (When 128 slave modules are
connected and the load current is not included)
32 points (I/O assignment: intelligent 32 points)
100000 times (maximum)
98 mm (H)  27.4 mm (W)  100 mm (D)
0.11kg
Specifications
2kHz 125kHz
1km 3km 50m
*1
Up to 128
Up to 32
Circuit:
(Supplied from the L bus side) Voltage +5V5%,
Current 0.2A max.
Transmission cable:
Voltage 24VDC +15 to -10% (21.6 to 27.6VDC),
ripple voltage 0.5Vp-p or lower
Current 0.5A (When 128 slave modules are
connected and the load current is not included)
90mm (H)  28.5mm (W)  104.5mm (D)
0.2kg
LJ51AW12D2
31.3kHz 7.8kHz
200m 1km
Up to 128 Up to 128
Up to 32
*2
2kHz
3km
*1