NAiS FP0-A80, Техническое руководство

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FP0 A/D Converter Unit 5.1 Specifications
5-3 Matsushita Electric Works (Europe) AG
Description Item
Absolute max-
Voltage range
±
15V
Absolute max-
imum input
Current range +30mA
Insulation method ( see note 3 )
Between analog input terminal to FP0 internal circuit:
photocoupler insulation (non-insulated between analog inputs)
Between analog input terminal to A/D converter unit external power supply:
insulation-type DC/DC converter
Number of FP0 input contact points
32 input contact points
First half (16 points): analog input ch0, 2, 4 and 6 data (WX2)
(
see note 4 )
Second half (16 points): analog input ch1, 3, 5 and 7 data (WX3)
(
see note 4 )
32 output contact points (Not used)
Averaging function Can be switched on and off
Notes
1) If the analog input value exceeds the upper/lower limit, the
digital value is held at the upper/lower limit.
2) The time noted below is required before the analog data is
reflected in the control unit input.
Conversion
time Refresh
standby time
Refresh
time
K2000
Analog input
WX2
0V
K0
10V
Conversion time: 1ms to 1ms x number of input channels
Refresh standby time: 0ms to scan time x
2
number of
input channels
Refresh time: 1ms x number of expansion units
Set switch for the number of input channels.
The control unit loads two channels worth of data at each
control unit scan. In other words, if the switch for the number
of input channels is set to eight channels, the control unit data
is updated once every four scans.
3) Refer to the schematic diagram of insulation methods below.
Analog input circuit
FP0
control unit
I/F
Photocoupler insulation
DC/DC
converter insulation
Bus
+5V
24V DC
A/D converter unit
24V DC
ch0 to ch7