ABB XSeriesG4, Руководство пользователя

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1 System overview
XSeriesG4 Remote Controller User's manual 2103334 Rev. AB | 13
Figure 11: AI connection examples
Electrical specification (each point):
–
Voltage mode, 0-10V
–
Current mode, 0-20 mA
–
Maximum voltage mode input before soft over-range, 10.7 V
–
Maximum allowable continuous input current, 22.8 mA
–
Typical input impedance voltage mode, 91.24 K Ohms
–
Typical input impedance current mode, 249.3 Ohms
4-20 mA transmitter
When using a 4-20 mA transmitter on the analog input, refer to Appendix A, 4
–20 mA transmitters
for more details.
Manufacturer’s instructions and specifications may not be applicable or accurate when used with Totalflow equipment.
For e
xample: The manufacturer’s specification claims to operate from 10 to 30 Vdc. It is not always clear that this 10-30 Vdc
must be applied across the 4-20 mA transmitter only (and not across the transmitter/load resistor series combination).
Display function
During the operation of the XRC
G4
, the front panel LCD continuously scrolls through the operating parameters. The system will
come with a group of standard system displays. Table 7 shows typical display parameters; however any parameter with a
register address can be displayed.
The duration that the parameter is displayed can vary from 1 to 255 seconds (default is 5 seconds); a setting of zero seconds
will set any display to off. Go to section 3.5.5,
Program display (and PCCU32 help files) for more details.
Table 7: Typical XRC
G4
display options
Display Description
DATE/TIME
MM/DD/YY
HH:MM:SS
Current Date and Time
24 hour clock
TYPICAL VOLTAGE ANALOG INPUT FIELD WIRING
SIGNAL
OUTPUT
COMMON (GND)
SIG (+)
GND
FIELD
DEVICE
24V
GND
SIG (+)
Voltage Mode
0-10V To ADC
POWER SOURCE COMMON
OR GND TERMINAL
GND
POWER SOURCE POS. TERM.
SIG
TYPICAL 2 WIRE 4--20mA FIELD DEVICE WIRING
(+) XMTR(-)
FIELD DEVICE
GND
24V
SIG (+)
255 Ohm
Resistor
Current Mode
0-10V To ADC