IC694MDL740 Positive Logic Output 0.5A per Point 2ms Response
Introduction:
This Emerson IC694MDL740 is a PACsystem RX3i output module with 16 positive logic channels. Rated 12/24 VDC, 0.5 A per point.
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Product Overview
The Emerson IC694MDL740 is a discrete output module from the PACSystem RX3i series. GE Intelligent Platforms originally produced this module. Emerson Automation now continues the RX3i product line. This module features sixteen discrete output channels in positive logic configuration. The outputs divide into two groups of eight channels each. Each channel delivers an output voltage range of 12 to 24 VDC. Output current reaches 0.5 Amperes per point. Total current per common reaches 2 Amperes. The IC694MDL740 draws 110 mA from the 5V DC backplane when all outputs energize. Individual channel LED indicators show the energization state of each output. A blue band on the front label identifies this as a low-voltage device. For field devices, this module controls motor starters, solenoids, and panel indicators.
Technical Specifications
General Specifications
| Parameter | Value |
|---|---|
| Brand | GE Fanuc / GE Intelligent Platforms (Former); Emerson Automation (Current) |
| Series | PACSystem RX3i |
| Part Number | IC694MDL740 |
| Product Description | Discrete output module |
| Type | Output module |
| Product Lifecycle Status | Active |
| LEDs | Yes (individual per channel plus fuse blown indicator) |
Output Specifications
| Parameter | Value |
|---|---|
| Number of Channels | Sixteen (16) |
| Number of Output Groups | Two (2) |
| Channels per Group | Eight (8) |
| Rated Voltage | 12/24 V DC |
| Output Voltage Range | 12 to 24 V DC (+20%, -15%) |
| Wiring Configuration | Positive Logic |
| Output Current per Channel | 0.5 Amperes |
| Output Current per Common | 2 Amperes |
| Maximum Inrush Current | 4.78 A for 10 ms |
| Output Voltage Drop | 1.0 Volt maximum |
| Off-state Leakage | 1 mA maximum |
| On Response Time (max) | 2 ms |
| Off Response Time (max) | 2 ms |
Isolation Specifications
| Parameter | Value |
|---|---|
| Isolation (Field to Backplane) | 250 VAC continuous (optical); 1500 VAC for 1 minute to Frame Ground |
| Isolation (Group to Group) | 250 VAC continuous; 1500 VAC for 1 minute |
Power Specifications
| Parameter | Value |
|---|---|
| Power Consumption | 110 mA (all outputs on) from 5V DC backplane |
Sixteen Positive Logic Outputs
The IC694MDL740 provides sixteen discrete output channels for field device control. Positive logic means the module sources current to the load from the positive power bus. This configuration suits devices that require a switched positive supply. Each output channel connects to loads such as solenoids, motor starters, and indicator lamps. Consequently, the Emerson IC694MDL740 simplifies wiring for positive-switching applications.
Two Groups of Eight Channels
The sixteen outputs divide into two isolated groups of eight channels each. Each group has its own common connection for flexibility. Different voltage sources can power each group independently if needed. For example, group one could run at 12 VDC while group two runs at 24 VDC. Group-to-group isolation reaches 250 VAC continuous and 1500 VAC for one minute. Therefore, the IC694MDL740 prevents interference between output groups during operation.
Output Voltage & Current Ratings
Rated voltage spans 12 to 24 VDC with +20% and -15% tolerance. This wide range accommodates standard industrial power supplies. Each channel delivers 0.5 Amperes continuously for typical loads. Total current per common reaches 2 Amperes maximum. Maximum inrush current reaches 4.78 Amperes for 10 ms to handle inductive loads. Output voltage drop stays below 1.0 Volt maximum under load. Off-state leakage current stays below 1 mA to prevent false triggering. For robust field control, the IC694MDL740 handles demanding loads reliably.
Fast Response Time
On response time reaches 2 ms maximum for fast output activation. Off response time also reaches 2 ms maximum for quick de-energization. This fast response suits applications requiring precise timing control. For example, high-speed sorting or indexing machines benefit from this speed. The Emerson IC694MDL740 delivers consistent, repeatable switching performance.
Isolation & Protection
Field to backplane isolation uses optical technology for complete electrical separation. Continuous rating reaches 250 VAC for robust noise immunity. Frame ground isolation reaches 1500 VAC for one minute for safety compliance. Group-to-group isolation also reaches 250 VAC continuous and 1500 VAC for one minute. This high isolation prevents cross-talk between output groups. Consequently, the IC694MDL740 protects the backplane from field-side faults.
LED Indicators
Individual channel LED indicators show the energization state of each output. When an output turns on, its corresponding LED illuminates. This visual feedback helps operators quickly grasp current operating status. A separate fuse blown status LED indicates protection circuit activation. For maintenance and troubleshooting, these LEDs prove invaluable. The Emerson IC694MDL740 reduces diagnostic time with clear visual indicators.
Backplane Current Draw
Current draw from the 5V DC backplane reaches 110 mA when all outputs energize. This moderate consumption suits most RX3i power supply configurations. Multiple IC694MDL740 modules can populate a single rack without overloading the power supply. For large systems, calculate total backplane load before finalizing your configuration. The module's efficiency leaves capacity for other I/O and specialty modules.
Blue Band Identification
A blue band on the front label identifies this as a low-voltage device. This color-coding follows industry standards for easy visual identification. Technicians can quickly distinguish the IC694MDL740 from high-voltage modules. For safety during maintenance, this identification proves essential. Therefore, the Emerson IC694MDL740 reduces the risk of wiring errors.
Compatible Field Devices
The IC694MDL740 controls a wide range of industrial field devices. Typical applications include motor starters for small motors. Solenoids for pneumatic and hydraulic valves work well with this module. Panel indicators and alarm annunciators connect directly to outputs. All field devices require an external power supply for operation. For versatile output control, the IC694MDL740 suits many automation tasks.
Installation Guidelines
Follow these steps for proper installation of the IC694MDL740.
Power down the RX3i rack completely before handling any modules.
Select an empty I/O slot in the RX3i backplane for this module.
Align the module with the upper and lower card guides in the slot.
Slide the IC694MDL740 firmly into place until the connectors fully seat.
Secure the module using the retaining screws at top and bottom.
Connect field wiring to the output terminals. Observe correct polarity for positive logic.
Connect external power supply to the common terminals for each group.
Power up the system and verify each LED responds correctly to output commands.
Note: The IC694MDL740 uses positive logic (sourcing) configuration. Each group requires its own external power supply. Do not exceed 0.5 A per channel or 2 A per common. The blue band indicates low-voltage DC operation only.
Packaging List
One Emerson IC694MDL740 Discrete Output Module
One product quick start guide
One terminal connector set
One anti-static protective bag
Common FAQs
1. What is the output voltage range of the IC694MDL740?
Output voltage ranges from 12 to 24 VDC with +20% and -15% tolerance. This wide range accommodates standard industrial power supplies. Each channel delivers 0.5 Amperes continuously for typical loads. For robust field control, the Emerson IC694MDL740 handles demanding loads reliably within this voltage range.
2. How many output groups does the IC694MDL740 have?
This module features two groups of eight output channels each. Each group has its own isolated common connection. Different voltage sources can power each group independently if needed. Group-to-group isolation reaches 250 VAC continuous and 1500 VAC for one minute. Therefore, the IC694MDL740 prevents interference between output groups during operation.
3. What is the response time of the IC694MDL740?
On response time reaches 2 ms maximum for fast output activation. Off response time also reaches 2 ms maximum for quick de-energization. This fast response suits high-speed sorting and indexing machines. The Emerson IC694MDL740 delivers consistent, repeatable switching performance for time-critical applications.
4. Does the IC694MDL740 have LED indicators?
Yes, individual channel LED indicators show the energization state of each output. When an output turns on, its corresponding LED illuminates. A separate fuse blown status LED indicates protection circuit activation. For maintenance and troubleshooting, these LEDs prove invaluable. The IC694MDL740 reduces diagnostic time with clear visual indicators.
5. What does the blue band on the IC694MDL740 indicate?
A blue band on the front label identifies this as a low-voltage device. This color-coding follows industry standards for easy visual identification. Technicians can quickly distinguish the IC694MDL740 from high-voltage modules. For safety during maintenance, this identification proves essential. Therefore, the Emerson IC694MDL740 reduces the risk of wiring errors.
Why Choose This Output Module?
The Emerson IC694MDL740 delivers reliable discrete output control for RX3i PACSystems. Sixteen positive logic channels drive solenoids, motor starters, and indicators. Two isolated groups of eight outputs provide wiring flexibility. Fast 2 ms response time suits high-speed applications. LED indicators per channel simplify troubleshooting. High isolation ratings protect the backplane from field faults. For 12/24 VDC output applications in RX3i systems, choose the IC694MDL740.