Mitsubishi Electric MES3-255C-DM-EN User Manual page 38

Item
backup
(*4)
Battery Type
Initial voltage
Nominal current
Life when in
storage
Life when in use
Transmission speed
Max. overall cable length
(Max. transmission distance)
Max. number of connected
units
Communication method
Synchronization method
Encoding method
Transmission path type
Transmission format
Error control method
Connection cable
Number of output points
Insulation method
Rated switching
voltage/current
Min. switching load
Max. switching load
Life
Pulse
Dedicated
input/
detection CT
Time limit
synchroni
Pulse detector
sm signal
input
Power frequency input
Contact output
- Measured data for the last 1 hour
Backed up by nonvolatile memory card.
- Setting values
- Measured data except for the last 1 hour
Lithium manganese dioxide primary battery
3.0 V
1800 mAh
5 years at room temperature (actual service value)
Energized
Guaranteed value
time ratio
0% 13,700 hours, 1.57 years
30% 19,100 hours, 2.18 years
50% 25,800 hours, 2.96 years
70% 40,000 hours, 4.57 years
100% 43,800 hours, 5 years
156 kbps / 625 kbps / 2.5 Mbps / 5 Mbps / 10 Mbps
Communication Cable length
speed between stations
156 kbps
625 kbps
2.5 Mbps 20 cm or longer
5 Mbps
10 Mbps
64 units under the following conditions.
1. Total number of stations
a + b × 2 + c × 3 + d × 4 ≤ 64
a: Number of units occupying 1 station, b: Number of units occupying 2
stations, c: Number of units occupying 3 stations, d: Number of units
occupying 4 stations
2. Number of connected units
16 × (A + D) + 54 × B + 88 × c ≤ 2304
A: Number of remote I/O station units
B: Number of remote device station units
C: Number of local station/intelligent device station units --- 26 units max.
D: Number of reserved station units*
* Unregistered station numbers between the station number 1 and the last station
number are counted as reserved station units.
Broadcast polling method
Frame synchronous method
NRZI method
Bus (RS-485)
HDLC compliant
16 12 5
CRC (X + X + X + 1)
Ver. 1.10-compatible CC-Link dedicated cable
16 points
Relay insulation
24 V DC 2 A (resistance load)
240 V AC 2 A (COSφ=1)
(24 V DC 2 A (charge de résistance))
(240 V AC 2 A (COSφ=1))
5 V DC, 1 mA
264 V AC 2 A, 125 V DC 2 A
Mechanical: 20,000,000 times or more, electrical: 100,000 times or more at rated
switching voltage/current
Number of pulses: 50000 pulses/kWh
Pulse conditions:
Distance: 100 m or below (dedicated cable)
Signal type: No-voltage normally-open contact/Open collector
Number of pulses: 50000, 12500, 10000, 2000
Pulse conditions: Pulse width, Pulse interval
100-110 V AC, -15% +10%, 50/60 Hz
No-voltage normally-closed contact, 250 V AC 3 A, 30 V DC 3 A
38
Specifications
Guaranteed time after battery
error occurs
600 hours, 25 days
Max. overall cable
length
1200 m
900 m
400 m
160 m
100 m
/1 point, 8 A/1 common
(/1 point, 8 A/1 commun)
--- 64 units max.
--- 42 units max.