Power supply
Operating Instructions MT-xx6-A
R. STAHL HMI Systems GmbH / OI_MT_xx6_A_en_V_03_00_26.docx / 03.11.2020
Page 17 of 60
NEC
Class I, Division 2, Groups A, B, C, D
Class II, Division 2, Groups F, G
Class III Hazardous Locations
Class I, Zone 2, Group IIC
CEC
Ex d e ia ib mb nA [ib Gb] [ic] IIC T4 Gc, Type 4X, IP66
Ex ia tc [ib ic] IIIC T80°C Dc, IP66
Class II, Division 2, Groups E, F, G, T80°C
INMETRO
MT-xx6-A-TX
Ex d e ia ib mb nA [ib Gb] [ic] IIC T4 Gc
Ex ia tc [ib Db] [ic] IIIC T80°C Dc IP66
MT-xx6-A-FX
Ex d e ia ib mb nA [ib op is Gb] [ic] IIC T4 Gc
Ex ia tc [ib op is Db] [ic] IIIC T80°C Dc IP66
CCC / CNEX
MT-xx6-A-TX
Ex d e ia ib mb nA [ib Gb] [ic] IIC T4 Gc
Ex ia td A22 [ibD] [ic] IP66 T80°C
MT-xx6-A-FX
Ex d e ia ib mb nA [ib op is Gb] [ic] IIC T4 Gc
Ex ia td A22 [ibD op is] [ic] IP66 T80°C
7
Power supply
7.1
HMI devices
Power supply:
24.0 VDC
(min. 20.4 VDC , max. 28.8 VDC / (-15 % / +20 %))
Up from 100 GB data memory (min. 21.6 VDC , max. 28.8 VDC / (-10 % / +20 %))
Power consumption:
1.2 A
7.1.1
All circuits in zone 2 and 22
If the HMI device and all connected circuits are solely used in zone 2 or 22, the HMI device can
be supplied with the required rated voltage of
U
rated
= 24 VDC (+20 % / -15 %)
7.1.2
With circuits in zone 1 and 21
If the HMI device is run in zone 2 and connected to intrinsically safe circuits / devices in zone 1,
the following applies:
U
m
= 30 VDC
(see IEC 60079-11).
7.1.3
HMI device terminals
Copper wires with cross sections of betwee 0.2 mm² (AWG24) and 2.5 mm² (AWG14) may be
connected to any of the terminals of the HMI devices.
When connecting cables to the terminals please make sure that the
insulation of the cables goes right up to the terminal contacts.
NOTICE
