Siemens ET 200M, Руководство пользователя, Страница: 257 / 284

8-Channel HART Analog Input MTA
Marshalled Termination Assemblies for ET200M Remote I/O Modules
A5E00482820-12 257
20.7 Technical Specifications
Technical Specifications for 8-Channel HART Analog Input MTA
(6ES7650-1AA61-2XX0)
Dimensions - See Section 1, Figure 1.3, Short Version
Mounting
DIN Rail 35mm ( deep or shallow; with panel mounted
DIN rail only deep)
Power Input
Voltage Input for Single or Redundant Feed 21.6 to 28.8 VDC
Current Consumption (nominal ratings; all inputs
2-wire transducers at 20mA, redundant modules)
0.29 A maximum
Power Dissipation (typical) 1 W
Terminal Block Wire Sizes
Wire Size – US
24 – 14 AWG
Wire Size – Metric
0,205 – 2,08 mm sq.
Electrical Isolation
Between the channels and shield Yes
Between the channels No
Between the channels and load voltage L+ For 2-wire transducer: No
4-wire transducer: Yes
Between the shield and load voltage L+ Yes
Permissible potential difference
Between the channels and shield (U
ISO
) 75 VDC
60 VAC
Between the channels and load voltage L+ For 4-wire transducer: 75 VDC
60 VAC
Between the channels Permissible common-mode voltage with a 4-
wire transducer: 60 VAC
Between the shield and load voltage L+ 75 VDC
60 VAC
Insulation tested
Channels to shield and load voltage L+
With 500 VDC, MTA jumper must be in 4 wire
position
Shield to load voltage L+ With 500 VDC
Between the channels No
Fuse Ratings / Current Limiting
Module 0.5 A (Bussmann P/N: GMA-0.5A)
(Siemens Spare P/N: A5E01568885)
Channel (2 wire transducer connection) short circuit current about 40 - 60 mA
Characteristic Data of Transducer Supply
Output voltage for transducer and field wiring at
22 mA
(125 Ω sense resistor on modules already taken
into account)
≥ 15 V (at Un = 24 V)