The GE Fanuc IC695ALG704, also cataloged as the IC695ALG704 Analog Output Module, operates as a dedicated hardware component for multi-range signal generation and loop actuator control within PACSystem RX3i platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC695ALG704 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Weight | 0.50 lbs (0.23 kg) |
| Dimensions | Single-slot RX3i module width |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 375 mA at 3.3 VDC backplane bus; 160 mA at 24 VDC isolated supply (4.8 W maximum dissipation) |
| Output Channels | 4 non-isolated channels |
| Output Signal Ranges | +/-10 VDC, 0 to 10 VDC, 0 to 20 mA, 4 to 20 mA |
| Signal Resolution | +/-10 V: 15.9 bits; 0 to 10 V: 14.9 bits; 0 to 20 mA: 15.9 bits; 4 to 20 mA: 15.6 bits |
| Output Load Limits | Current: 850 Ohms maximum (10 uH max reactance); Voltage: 1 uF max load reactance |
| Update Rate & Settling Time | 8 ms update rate; 2 ms settling time (0 to 95%) |
| Calibrated Accuracy | 0.15% of full scale at 25 deg C; 0.30% of full scale at 60 deg C |
| Output Protection | Voltage outputs withstand -30 VDC for 60 s, +30 VDC for 1 h |
| External Power Input | 19.2 to 30 VDC (24 VDC nominal) |
| Data Formats | IEEE 32-bit floating point; 16-bit integer in a 32-bit field |
Backplane Bus Communication Velocity & Firmware Processing
The IC695ALG704 interfaces directly with the RX3i PCI backplane bus to execute high-speed data transfers with minimal processing latency. Channel data update rates are maintained at 8 ms across all four output paths, utilizing IEEE 32-bit floating point or 16-bit integer formatting. Firmware flash compatibility requires RX3i CPU version 3.0 or later to ensure seamless signal scaling and hardware initialization. The module manages power distribution by drawing up to 375 mA from the 3.3 VDC backplane rail alongside 160 mA from an external 24 VDC user supply.
Frequently Asked Questions
Q: What CPU firmware level is required to operate the IC695ALG704 module in an RX3i chassis?
A: The module requires RX3i CPU firmware version 3.0 or later for valid backplane recognition and parameter configuration.
Q: What are the electrical load limitations for the current and voltage output channels?
A: Current channels drive up to 850 Ohms maximum with 10 uH maximum load reactance. Voltage channels support load reactance up to 1 uF.
Q: Does the IC695ALG704 module support HART protocol communication?
A: No, HART protocol is not supported on the analog output channels of this module.
Field Installation Guidelines
- Isolate all backplane power and external 24 VDC field supplies prior to mounting or removing the module from the RX3i rack slot.
- Align the module housing with the designated rack slot guides and press firmly until the backplane connector seats completely.
- Connect external +24 VDC power (19.2 to 30 VDC range) to the specified field terminal pins to supply driver loop power.
- Ground all analog cable shields at a single chassis earth point to prevent ground loops and electrical noise interference.
- Verify that wiring polarity matches the selected current or voltage mode before applying field power to avoid tripping output protection circuitry.
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