Mitsubishi Electric MES3-255C-EN User Manual page 33

Item
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 24 V DC 2 A (resistance load)
Min. switching load
Max. switching load
Life
*1 This indicates the assumed area of electric distribution to which the device is connected, the area ranging from
public distribution to factory machinery. The measurement category II applies to the device power-supplied from
fixed facility. The surge voltage of this product is 2500 V up to the rated voltage of 300 V. (IEC 60664-1)
The index indicates the level of conductive substance at the device's operating environment. Contamination level 2 means
*2
only non-conductive substance. However, occasional condensation may lead to temporary conduction. (IEC 60664-1)
*3 It is only for products with demand control function.
*4 If the unit is reset when power failure compensation is not available by expiration of power failure compensation
period, set time would be changed to the initial status (00:00 on 1st of January, 2002).
If the time is changed with this status, measured data may be disappeared.
Necessary data should be measured before changing the time setting.
About the data collecting method please refer to "Data Collecting" part in chapter 4.7.1 for maintenance of the
user's manual (Settings).
*5 For UL/c-UL standard, please use the copper conductors wire which temperature rating is 60 ºC /75 ºC.
5 years at room temperature (actual service value)
Energization 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
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
33
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.