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2024年7月14日发(作者:)
GE Fanuc IC694ALG390
/automation/ge-fanuc/rx3i-pacsystem/IC694ALG390
Rx3i PacSystem
Analogue Output module IC694A IC694AL IC694ALG
919-535-3180
*******************
10
Analog Output Module, 2 Channel Voltage: IC694ALG390
MODULE 0K
The 2–Channel Analog Voltage Output module, IC694ALG390, has
two output channels, each capable of converting 13 bits of binary
(digital) data to an analog output signal for field devices. The Analog
Voltage Output module provides outputs in the range of -10 volts to
+10 volts. Both channels are updated on every scan.
The module’s outputs can be set up to either Default to 0 volts or
Hold–Last–State if the CPU goes to the Stop mode or Reset.
Selection of the output default state is made by a jumper on the
module. If the jumper is not installed, the outputs Hold Last State.
This module can be installed in any I/O slot in an RX3i system.
IC694ALG390
Q1
Q2
Isolated +24 VDC Power
If the module is located in an RX3i Universal Backplane, an external
source of Isolated +24 VDC is required to provide power for the
module. The external source can be connected via the TB1
connector on the left side of the backplane or directly on the module’s
terminal block.
If this module is located in an Expansion Backplane, its primary power
source can be either the Isolated +24 VDC from the backplane power
supply or an external Isolated +24 VDC power supply connected to
the module’s terminal block. If the external source is set between
27.5-30 VDC, it takes over the module’s load from the Isolated 24
VDC system supply. Note that an external source should be used if it
is desired to maintain hold last state operation during a loss of
backplane power.
LED
The Module OK LED is ON when the module’s power supply is
operating.
10-2 PACSystems™ RX3i System Manual – October 2005 GFK-2314C
10
Specifications: ALG390
Voltage Range
Calibration
Supply Voltage (nominal)
External Supply Voltage Range
External Supply Voltage Ripple
Update Rate
Resolution
Absolute Accuracy *
Offset
Output Loading (maximum)
Output Load Capacitance
Isolation, Field to Backplane
(optical) and to frame ground
Internal Power Consumption
-10 to +10 volts
Factory calibrated to 2.5 mV per count
+24 VDC, from isolated +24 VDC on backplane or user-
supplied voltage source, and +5 VDC from backplane
18 VDC to 30 VDC
10%
Approximately 5 milliseconds (both channels) Update rate is
application dependent.
2.5 mV (1 LSB = 2.5 mV)
+/-5 mV at 25°C (77°F)
1 mV maximum, 0 to 60°C (32° to 140°F)
5 mA (2 K ohms minimum resistance)
2000 pico farads, maximum
250 VAC continuous; 1500 VAC for 1 minute
32 mA from +5 VDC supply
120 mA from +24 VDC supply (isolated backplane or user
supply)
Refer to Appendix A for product standards and general specifications.
* In the presence of severe RF interference (IEC 801–3, 10 V/m), accuracy may be degraded to
±
50 mV.
GFK-2314C Chapter 10 Analog Output Modules 10-3
10
Data Format: ALG390
Module data is stored by the PLC CPU in 16–bit 2’s complement format:
MSB LSB
+/- 10 9 8 7 6 5 4 3 2 1 0 X X X X
Resolution of the converted signal is 12 bits binary plus sign, which is effectively 13 bits (1 part
in 8192). The module scales the digital data to create an output voltage for the output:
D/A Bits versus Voltage Outputs
4000
D/A
BITS
0
(decimal)
4000
10 0
VOLTAGE (V)
10
Scaling of the output is shown below.
32000
Units
0
(decimal)
32000
100
VOLTAGE (V)
10
10-4 PACSystems™ RX3i System Manual – October 2005 GFK-2314C
10
Field Wiring: ALG390
Terminals Field Wiring
Terminal Connection
1 No connection
2 No connection
3 Output 1
4 Output 2
5
6
7
8
Output 1 Common
Output 2 Common
Shield termination point for output 1
Shield termination point for output 2
1
3
5
7
9
11
13
15
17
19
NC
NC
2
Q1
4
COM
Q2
COM
6
GND
*
GND
8
*
NC
NC
10
DEF0
NC
12
*
14
NC
NC
NC
16
+
*
18
24V
-
NC
20
9 No connection
10 No connection
11 - 13
12
13
Output default selection jumper
No connection
Output default selection jumper
14 No connection
15 No connection
16 No connection
17
19
External +24 VDC Power Supply +
External +24 VDC Power Supply -
18 No connection
20 No connection
*Optional Connections
To minimize capacitive loading and noise, all field connections should be wired using a good
grade of twisted, shielded instrumentation cable. The shields should be connected to GND on
the user terminal connector block. The GND connection provides access to the backplane
(frame ground) resulting in superior rejection of noise caused by any shield drain currents.
DEF0 is the optional Output Default Jumper. It determines the operation of both outputs when
the CPU is in Stop or Reset mode. The jumper should be installed if outputs should default to 0.
The jumper should not be installed if outputs should hold their last state (the last valid
commanded value received from the CPU).
An optional external +24 VDC supply can be installed as shown.
GFK-2314C Chapter 10 Analog Output Modules 10-5
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