The GE IS220PPRAH1A delivers independent backup overspeed protection for turbine systems. It is a key part of the Mark VIeS series. This I/O module supports up to six speed inputs when you use dual-speed sensors per shaft. Furthermore, it includes a hardware watchdog timer and isolated trip contact inputs. The IS220PPRAH1A requires a TMR setup with three identical packs on a TREA terminal board. You cannot use it in single or dual-pack configurations.
This section lists the main technical parameters of the IS220PPRAH1A.
Input Power Supply Voltage: 24 V DC (nominal 28V DC)
Number of Transducers: 2
Pressure Wave Frequency Range: 1.5 Hz
Power Consumption: ≤ 15 W
Number of Input Channels: 16
Input Voltage Range: 0–5 V
Maximum Lead Resistance: 15 Ω
MPU Pulse Rate Range: 2 Hz
Supported Protocols: MODBUS TCP/IP
Dimensions: 33.0 cm wide x 17.08 cm high
Mounting Type: Surface-mount
Operating Temperature: -20°C to +70°C
Country of Origin: United States
Additionally, the IS220PPRAH1A integrates two fully independent 10/100 Ethernet ports. It also features an internal temperature sensor and status-indication LEDs.
The IS220PPRAH1A is built for harsh industrial environments. Its surface-mount design secures directly onto the TREA terminal board. The module weighs only 1.2 kg, which simplifies handling during installation.
Specifically, the operating temperature ranges from -20°C to +70°C. This wide range makes it suitable for most turbine control rooms and outdoor cabinets. Moreover, the module includes a conformal PCB coating (indicated by the "H1A" suffix). This coating protects against moisture and dust.
Follow these steps to install the IS220PPRAH1A correctly.
First, securely mount the TREA terminal board onto a flat surface. Next, directly plug three IS220PPRAH1A packs into the TREA board. Slide the threaded posts on each IS220PPRAH1A into the slots on the terminal board mounting bracket. Then, adjust the bracket so the DC-62 pin connector fits tightly. Tighten the nuts on the threaded posts to lock each module in place.
For network connections, plug one or two Ethernet cables depending on your system. The IS220PPRAH1A is not sensitive to port selection. It automatically chooses the proper operation over either port. Finally, apply power by connecting the power connector on the side of the module. The soft-start capability limits inrush current automatically.
In a single-controller system, connect the R network to JX1, the S network to JY1, and the T network to JZ1. For dual controllers, connect R to JX1, S to JY1, and both R and S to JZ1. For three controllers, connect R to JX1, S to JY1, and T to JZ1.
1. Can I use a single IS220PPRAH1A alone?
No. The IS220PPRAH1A requires three identical packs on a TREA terminal board with the WREA option. Single or dual-pack operation is not possible.
2. What is the difference between IS220PPRAH1A and IS220PPRAS1A?
IS220PPRAH1A is the standard version. IS220PPRAS1A is the IEC 61508 certified version for safety loops up to SIL3.
3. Does the IS220PPRAH1A support MODBUS TCP/IP?
Yes. The module supports MODBUS TCP/IP through its two independent 10/100 Ethernet ports.
4. What terminal board is compatible with this module?
The IS220PPRAH1A works exclusively with the IS200TREA terminal board and IS200WREA daughter board.
5. Is the IS220PPRAH1A in stock and available for fast delivery?
Yes. We keep the IS220PPRAH1A in stock. Delivery typically takes 3–7 days via FedEx, UPS, or DHL.
| Brand Name | General Electric |
| Model No. | IS220PPRAH1A |
| Product Type | I/O Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
