The IC670MDL742 belongs to the GE Fanuc Field Control series. This module provides 16 discrete output channels in a single group. It uses negative logic, meaning the outputs act as current-sinking devices. Each output switches the load to the negative side of the DC power supply. Therefore, this module works perfectly with loads that require a sinking driver.
The IC670MDL742 supports multiple voltage levels. Specifically, it operates at 5 VDC, 12 VDC, and 24 VDC ratings. The user input voltage accepts two ranges: 4.75 to 5.25 Volts DC and 10.5 to 28.5 Volts DC. Meanwhile, the output voltage spans 4.5 to 28.25 Volts DC. Each point sinks 0.5 Amps continuously, and the entire module handles 8 Amps total steady-state current.
Number of Outputs: 16 points
Number of Groups: 1
User Input Voltage Range 1: 4.75 – 5.25 Volts DC
User Input Voltage Range 2: 10.5 – 28.5 Volts DC
Output Voltage Range: 4.5 – 28.25 Volts DC
Output Current per Point: 0.5 Amps
Total Steady-State Load per Module: 8 Amps
Current Drawn from Power Supply: 111 mA
Inrush Current: 2 Amps maximum for 100 ms
Output Voltage Drop: 0.25 Volts maximum
Output Leakage Current: 250 microamps at 28.5 Volts DC
Group to Group Isolation: None
Protection: Built-in 10 Amp fuse
Weight: 2 pounds (0.91 kg)
The IC670MDL742 uses negative logic, which differs from positive logic modules. In negative logic, the output turns on when the logic signal is low. The output FET sinks current from the load to the negative side of the power supply. Consequently, the load connects between the positive supply and the output terminal.
For example, to turn on a 24 VDC relay coil, connect the coil positive to +24 VDC. Then connect the coil negative to an output terminal on the IC670MDL742. When the output activates, it completes the circuit to ground. This sinking configuration is common in many industrial control systems.
The IC670MDL742 includes a built-in 10 Amp rated fuse. This fuse connects to the external power source. It protects the module in two key situations. First, it prevents damage from excessive current flowing through the output points. Second, it guards against power supply polarity reversal. If you reverse the power supply connections, the fuse blows immediately.
Additionally, the module features a transparent top section. This design makes the indicator LEDs clearly visible from above. The PWR LED shows two important conditions: whether backplane power is present and whether the fuse is blown. A blown fuse diagnostic message also goes to the bus interface unit. For replacement, use an easy-to-remove fuse with the same rating.
The IC670MDL742 uses optoisolators to separate logic components from field outputs. This isolation improves reliability in noisy industrial environments. The module contains Field Effect Transistors (FETs) powered by an external supply. These FETs sink current through the loads. Additionally, the bus interface module supplies logic power to the IC670MDL742. The bus interface unit also collects output data from host devices or processors.
First, mount the bus interface unit on a DIN rail or panel. Next, attach the IC670MDL742 to the Field Control base. Then, connect an external DC power supply to power your loads. Pay close attention to polarity. A reversed connection blows the 10 Amp fuse instantly. After that, wire your field loads between the positive supply and the output terminals.
For negative logic, the output sinks current when active. Verify that your load voltage stays within 4.5 to 28.25 VDC. Also, keep the current per point below 0.5 Amps and the total module current below 8 Amps. Finally, test each output with a small load first. This confirms correct wiring before full operation.
IC670MDL742 module – 1 unit
Terminal block (integrated) – 1 unit
Quick start guide – 1 copy
*Note: No certificates or warranty documents are included in the package. The 10A fuse is pre-installed.*
We ship via Fedex, UPS, or DHL. All packages are tracked and insured.
1. What is the difference between the IC670MDL740 and the IC670MDL742?
The IC670MDL740 uses positive logic (sourcing outputs). The IC670MDL742 uses negative logic (sinking outputs). Choose based on your load wiring requirements.
2. Can I mix 5V, 12V, and 24V loads on the same IC670MDL742?
Yes, but all loads must share the same common return. The module has one group with no point-to-point isolation. Therefore, use the same supply voltage for all loads in the group.
3. What happens if the fuse blows on the IC670MDL742?
The PWR LED turns off or changes state. The bus interface unit also receives a blown fuse diagnostic message. Replace the fuse with an identical 10 Amp rated fuse.
4. Does the IC670MDL742 provide isolation between individual outputs?
No. All 16 outputs share a single group. There is no group-to-group isolation. However, optoisolators do isolate the logic side from the field outputs.
5. What is the maximum inrush current for the IC670MDL742?
The maximum inrush current is 2 Amps for 100 milliseconds. For loads with higher inrush, add external suppression or use a different module.
| Brand Name | GE Fanuc |
| Model No. | IC670MDL742 |
| Product Type | Output Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
