Eaton HCU16x, Инструкция по эксплуатации

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DRAFT - 11 December 2014 DRAFT - 11 December 2014
6
DRAFT - 11 December 2014
INM MTL4850_54 Rev4
Model Description
HTP-SC32 no parallel resistor, zero ohm link fitted in series
(used for current inputs with 250
W
input impedance or HART compatible
outputs)
HTP-SC32-P250
250
W
parallel resistor, zero ohm link fitted in series
(used for 1–5V system inputs)
HTP-SC32-S150
no parallel resistor, 150
W
resistor fitted in series
(used for current inputs with100
W
input conditioning)
HTP-SC32-S200
no parallel resistor, 200
W
resistor fitted in series
(used for current inputs with 50 or 63.5
W
input conditioning)
HTP-SC32-S240
no parallel resistor, 240
W
resistor fitted in series
(used for outputs with isolator connected to field terminals. Use HMU16AO
for direct connection to field device)
4.1.1 Application examples
Table 4.1
HTP-SC32
model
options
A
B
DCS input +
DCS input –
+24V or Tx+ from DCS
Tx
2 wire
transmitter
input
A
B
Tx+
Ch+
HART
Tx+
Ch+
Link
250
Ω
Figure 4.2a
HTP-SC32
for 2-wire Tx
A
B
DCS input +
DCS input –
+24V or Tx+ from DCS
Tx
2 wire
transmitter
input
A
B
Tx+
Ch+
HART
Tx+
Ch+
200
Ω
50
Ω
Figure 4.2b
HTP-SC32-S200
for 2-wire Tx
DCS input +
DCS input –
Tx
4 wire
transmitter
input
A
B
HART
Ch+
250
Ω
Link
Ch–
A
B
Ch+
Ch–
Power
Figure 4.2c
HTP-SC32
for 4-wire Tx
DCS input +
DCS input –
Tx
4 wire
transmitter
input
HART
Ch+
250
Ω
Link
Ch–
A
B
Ch+
Ch–
Power
1 – 5V input
A
B
Figure 4.2d
HTP-SC32-P250
for 4-wire Tx
DCS input +
DCS input –
Smart Positioner/
I-P converter
A
B
HART
Ch+
240
Ω
Ch–
Ch+
Ch–
A
B
Figure 4.2d
HTP-SC32 or
(-S240)
4.1.2 Mounting
The HTP-SC32 is designed for mounting in a control room equipment cabinet and is supplied
fitted on a carrier suitable for T or G section DIN-rail mounting in any orientation.
Carrier weight: 500g
Module weight: 120g
Footprint dimensions: See Figure 4.1
Height (modules fitted): 152mm from top of DIN rail
4.1.3 RS485 communication connections
Two RS485 ports are provided on the board - see Figure 4.2. These are used to connect the HTP-
SC32 to the PC running the maintenance software and to onward link to other HTP-SC32 or
similar HART interfaces.
Full details of this communications link are provided in Sections 4.12.