Danfoss VLT PTC Thermistor Card MCB 112 Operating Manual page 30

VLT® PTC Thermistor Card MCB 112
Operating Guide
Overvoltage category
Contamination level
Rated insulation voltage U
I
Safe separation up to U
I
7.4 Other Specifications
Form
Dimensions (H x W x T) [mm]
Wire connection, solid wire
Insulation strip length
Protection rating IEC 60529
Weight
7.5 Safety Characteristics of the Built-in MCB 112
The safety characteristics include the connection between output safe stop T37 (output X44/12 on VLT
112) and terminal 37 input on the control card.
Table 8: Safety Integrity Level SIL (EN 61508)
Operating mode Hardware architecture
Low demand mode 1oo1
Table 9: Safety-related Parameters, Part 1
MCB 112 MTBF
T =40 °C 44 years
a
Table 10: Safety-related Parameters, Part 2
MCB 112 Proof test interval
T =40 °C PFD
a avg
Observe the proof test interval according to EN 60079-17 for electrical equipment ≤3 years.
The data of the functional safety stated in
ambient temperatures can be obtained on request.
30 | Danfoss A/S © 2022.08
Fault tolerance HFT
0
SFF λ
SD
-9
96,5% 2103 x 10 /h
1 year
3.37E-04
Table 8 to Table 10 are valid for an ambient temperature of 40 °C (104 °F). Data for more
1 x 0.5–1.5 mm
Safety integrity level
SIL 2
λ λ
SU DD
-9
41.8 x 10 /h 1.23 x 10
3 years 5 years
1.01E-03 1.68E-03
AQ267038105120en-000101 / 130R0104
Specifications
690 V
500 V
82.5 x 69.5 x 29.5
2
(AWG 20–16 solid wire)
8.5–9.5 mm (0.33–0.37 in)
≈50 g (1.7 oz)
PTC Thermistor Card MCB
®
Subsystem
Type A device
λ
DU
-9 -9
/h 81.4 x 10 /h
10 years
3.37E-03
III
2
PA 6
IP20