This high speed counter module captures fast pulse signals for GE Series 90-30 PLC systems. It counts encoder pulses, flow meter signals, and high-speed event occurrences. Therefore, it enables precise position and speed monitoring for motion control applications.
Physical and Counter Specifications
The GE IC693APU300D measures 12.5 cm in length and 9.0 cm in width. Moreover, its module weight equals approximately 0.30 kg for rack mounting. A single 20-pin removable terminal block handles all field wiring connections. Additionally, this module contains two independent high-speed counter channels.
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Full Model | IC693APU300D |
| Category | High Speed Counter Module |
| Dimensions (L x W x H) | 12.5 cm x 9.0 cm x 5.5 cm (4.92″ x 3.54″ x 2.17″) |
| Module Weight | 0.30 kg (0.66 lbs) |
| Primary Interface | 1 x 20-pin Removable Screw Terminal Block |
| Backplane Interface | 1 x 48-pin Male Connector (Series 90-30 Rack) |
| Operating Voltage | 5 VDC from Backplane (0.6 A Typical) |
| Power Consumption | 3.0 W (Typical) |
| Counter Channels | 2 Independent Channels |
| Input Type | 5 VDC or 24 VDC (Selectable per Channel) |
| Maximum Count Frequency | 100 kHz per Channel |
| Counter Resolution | 24 Bits (0 to 16,777,215 Counts) |
| Counter Modes | Up + Down + Pulse/Direction + Quadrature (x1, x2, x4) |
| Input Voltage Range (24V Mode) | 0 to 30 VDC |
| Input Voltage Range (5V Mode) | 0 to 5.5 VDC |
| Input On-State Voltage (24V) | > 15 VDC |
| Input On-State Voltage (5V) | > 3.5 VDC |
| Input Off-State Voltage | < 5 VDC (24V Mode), < 1.0 VDC (5V Mode) |
| Input Impedance (24V Mode) | 4.7 kΩ |
| Input Impedance (5V Mode) | 1.0 kΩ |
| Input Response Time | 5 µs (Typical) |
| Gate Function | Enable/Disable per Channel (External or Software) |
| Preset Value | Programmable (0 to 16,777,215) |
| Comparator Outputs | 2 (One per Channel, 24 VDC, 0.1 A) |
| Interrupt Capability | Yes (Upon Reach of Preset Value) |
| On-Board Components | 1 Microcontroller + 2 Counter ICs + 4 Optocouplers + 2 Comparator Drivers + 4 Protection Diodes + 1 Voltage Regulator + 1 Oscillator (16 MHz) + 2 Memory Chips |
| Energy Storage | 3 x 100 µF Electrolytic Capacitors (35V) + 2 x 10 µF Tantalum (25V) |
| Isolation Rating | 1500 Vrms (Inputs to Backplane) |
| Operating Temperature | 0°C to +55°C (32°F to 131°F) |
| Storage Temperature | -25°C to +85°C (-13°F to 185°F) |
| Mounting Type | Series 90-30 PLC Rack (Single Slot) |
| Status Indicators | 1 Green LED (Power) + 1 Green LED (Run) + 2 Yellow LEDs (Channel Activity) + 1 Red LED (Fault) |
High-Speed Counting and Channel Features
The GE IC693APU300D counts pulses at up to 100 kHz per channel. Specifically, each channel operates independently with its own counter IC and configuration. In addition, four counting modes handle various encoder and sensor types for flexibility. Moreover, the 24-bit resolution provides up to 16,777,215 counts per channel. Furthermore, you can select 5 VDC or 24 VDC input levels per channel. Thus, this module suits high-speed positioning, packaging, and flow metering applications perfectly.
Counter Modes and Configuration Options
This high speed counter module supports four distinct counting modes for versatility. For instance, Up mode counts forward pulses from a single proximity sensor. In addition, Pulse/Direction mode uses two signals for position and direction tracking. Moreover, Quadrature mode decodes A/B signals from incremental encoders with x1, x2, or x4 multipliers. Furthermore, an external gate input enables or disables counting on command per channel. Consequently, you can configure each of the two channels independently for different measurement tasks.
Comparator Outputs and Interrupt Capabilities
Each counter channel includes a programmable comparator output for precise control. Specifically, when the count reaches a preset value, the output activates automatically. In addition, the module can generate a CPU interrupt at the same moment for fast response. Moreover, you can set different preset values for each channel independently. Furthermore, the comparator outputs provide 24 VDC signals for direct actuator control. Thus, this module triggers machine actions at exact count positions without CPU polling or delays.
Energy Storage and Operational Stability
This high speed counter module stores energy using five onboard capacitors for power filtering. Specifically, three electrolytic capacitors smooth the 5 VDC supply for stable counter operation. In addition, two tantalum capacitors provide high-frequency noise suppression for counter circuits. Furthermore, these capacitors maintain count integrity during brief power interruptions. Therefore, the GE IC693APU300D prevents count loss in noisy industrial environments reliably.
Installation and Diagnostic Indicators
Five LED indicators provide operational status at a glance on this module. First, a green Power LED lights when the 5 VDC backplane supply is present. Second, a green Run LED indicates normal module operation and configuration. Third, two yellow Channel Activity LEDs flash when each channel detects an input pulse. Finally, a red Fault LED signals hardware errors or configuration issues. Additionally, the module includes a keying mechanism for correct rack insertion. Thus, you can diagnose counter status instantly without external tools or oscilloscopes.
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