Power Distribution Modules - Mitsubishi Electric MELSEC ST Series Installation Manual

The volume of data that is exchanged between slave and master station depends on the mode
that has been set:
Item
Bit I/O points
Word I/O points
(variable)
Request/Informa-
tion area
Total
2.2.2

Power Distribution Modules

Item
SYS.
AUX.
Dielectric withstand voltage
Insulation resistance
Noise durability
Indication of operating status
Number of occupied slices (Width)
Number of occupied I/O points
Internal power consumption (5 V DC)
Weight
MELSEC ST Series
32-point mode
Input Output
32 bits 32 bits
max. max.
52 words 52 words
14 bytes 14 bytes
max. max.
122 bytes 122 bytes
Rated input voltage
Rated allowable voltage
Max. rated input current at 24 V DC
Output
Efficiency
Rated input voltage
Rated allowable voltage
Max. rated input current at 24 V DC
Output
64-point mode 128-point mode
Input Output Input
64 bits 64 bits 128 bits
max. max. max.
52 words 52 words 52 words
20 bytes 20 bytes 32 bytes
max. max. max.
132 bytes 132 bytes 152 bytes
ST1PSD
24 V DC
24 V DC ±20 %,
ripple ratio within 5 %
0.7 A
5 V DC, maximum 2.0 A
≥ 80 %
24 V DC +20/ -15 %, ripple ratio within 5 %
0.7 A
24 V DC, max. 8.0 A
500 V AC for 1 minute,
600 V AC for 1 s across SYS. inputs and AUX. inputs
≥ 10 MΩ across SYS. inputs and AUX. inputs
(Checked with 500 V DC insulation resistance tester)
Checked with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
LED "SYS": Indicates that
5 V DC are output
LED "AUX": Indicates that 24 V DC are output
2 slots (25.2 mm)
2 inputs and 2 outputs
—
0.06 kg
Specifications
256-point mode
Output Input Output
128 bits 256 bits 256 bits
max. max.
52 words 32 words 32 words
32 bytes 56 bytes 56 bytes
max. max.
152 bytes 152 bytes 152 bytes
ST1PDD
—
24 V DC
—
—
1 slot (12.6 mm)
0.06 A
0.03 kg
max.
max.
13