Unidrive M702 User Guide
237
Issue Number: 3
12.1.19 Weights
Table 12-12 Overall drive weights
12.1.20 SAFE TORQUE OFF data
Data as verified by TÜV Rheinland:
According to EN ISO 13849-1:
PL = e
Category = 4
MTTF
D
= High
DC
av
= High
Mission Time and Proof Test Interval = 20 years
The calculated MTTF
D
for the complete STO function is:
STO1 2574 yr
STO2 2716 yr
According to EN 61800-5-2:
SIL = 3
PFH = 4.21 x 10
-11
h
-1
Logic levels comply with IEC 61131-2:2007 for type 1 digital inputs rated
at 24 V. Maximum level for logic low to achieve SIL3 and PL e 5 V and
0.5 mA.
12.1.21 Input current, fuse and cable size ratings
The input current is affected by the supply voltage and impedance.
Typical input current
The values of typical input current are given to aid calculations for power
flow and power loss.
The values of typical input current are stated for a balanced supply.
Maximum continuous input current
The values of maximum continuous input current are given to aid the
selection of cables and fuses. These values are stated for the worst case
condition with the unusual combination of stiff supply with bad balance.
The value stated for the maximum continuous input current would only
be seen in one of the input phases. The current in the other two phases
would be significantly lower.
The values of maximum input current are stated for a supply with a 2 %
negative phase-sequence imbalance and rated at the maximum supply
fault current given in Table 12-13.
Table 12-13 Supply fault current used to calculate maximum input currents
Size
Model
kg
lb
3
034300078, 034300100
4.5
9.9
All other variants
4.0
8.8
4
All variants
6.5
14.30
5
All variants
7.4
16.30
6
All variants
14
30.90
7
All variants
28
61.70
8
Model
Symmetrical fault level (kA)
All
100
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