IS220PAICH2A

IS220PAICH2A is an analog I/O module developed by General Electric. It is a part of the Mark VIe Speedtronic control system. This I/O pack is directly attached to the terminal board. The I/O pack is connected to the simplex terminal board via a single DC-37 pin connector. If only one I/O pack is installed, the TMR-capable terminal board has three DC-37 pin connectors and can be used in simplex mode. All of these connections are directly supported by the I/O pack.

Functional Description

• The Analog I/O pack (PAIC) is an electrical interface that connects one or two I/O Ethernet networks to an analog input terminal board. The PAIC includes a BPPx processor board as well as an acquisition board dedicated to the analog I/O function.
• The module has ten analog inputs. The first eight inputs can be set to 5 V or 10 V or 4-20 mA current loop inputs. The final two inputs can be set to 1 mA or 4-20 mA current inputs.
• The load terminal resistors for current loop inputs are located on the terminal board, and the PAIC senses voltage across these resistors. PAICH2 has two current loop outputs ranging from 0 to 20 mA. It also includes additional hardware that allows for 0-200 mA current on the first output only.
• The I/O pack receives and sends data to the controller via dual RJ-45 Ethernet connectors and is powered by a three-pin connector. Field devices are communicated with via a DC-37 pin connector that connects directly to the associated terminal board. LED indicator lights provide visual diagnostics.

IS220PAICH2A Installation

1. Securely mount the terminal board of choice.
2. Insert the PAIC I/O pack directly into the terminal board connectors.
3. Use the threaded studs adjacent to the Ethernet ports to mechanically secure the I/O pack(s). The studs fit into a terminal board-specific mounting bracket. The bracket should be positioned so that no right-angle force is applied to the DC-37 pin connector between the I/O pack and the terminal board. The adjustment should only be needed once during the product's service life.
4. Depending on the system configuration, connect one or two Ethernet cables. The I/O pack will function on either port. When using dual connections, it is common practice to connect ENET1 to the network associated with the R controller.
5. Connect the I/O pack to power by plugging in the connector on the side of the pack. Because the I/O pack has inherent soft-start capability that controls current inrush on power application, it is not necessary to disconnect power from the cable before plugging it in.
6. Configure the I/O pack as needed using the ToolboxST application.

Additional Hardware

• PAICH2 includes hardware support in the form of an add-on daughterboard that adds 0-200 mA output capability to the first analog output, analog output 1.
• To reduce power dissipation of the linear output transistor, power for the 200 mA circuit is derived from a variable voltage source on the daughterboard.