IS230SSVPH1A - Servo Input/Output Terminal Board

SPECIFICATIONS:

Part Number: IS230SSVPH1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Servo Input/Output Terminal Board
Number of inputs: 6
Number of outputs: 2
Power supply voltage: 28 V dc
Voltage Range: 14 to 32 V dc
LVDT excitation output: 3.2 ±0.2 kHz
Outputs: 24 V dc
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to 65°C
Size: 33.02 cm high x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
Manual: GEH-6721_Vol_II

FUNCTIONAL DESCRIPTION:

IS230SSVPH1A is a Servo Input/Output Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The Servo I/O (SSVP) terminal board connects to two electro-hydraulic servo valves that actuate the steam valves. Valve position is measured with linear variable differential transformers (LVDT) or linear variable differential reluctance transformers (LVDR). SSVP is designed specifically for the PSVP I/O pack and the WSVO servo driver. It does not work with the VSVO board or the PSVO pack. The SSVP is a simplex terminal board. Dual redundancy is supported by using two SSVPs and fanning the inputs externally. Likewise, for TMR redundancy, use three SSVPs and fan the LVDT inputs externally by using jumpers to send the signal from one SSVP to another SSVP. A single 28 V dc supply comes in through plug P28IN. Plugs JD1 or JD2 are for an external trip from the protection module.

INSTALLATION:

• Sensors and servo valves are wired directly to the TB1 I/O terminal block. The block is held down with two screws and has 24 terminals accepting up to #12 AWG wiring. A shield terminal strip attached to the chassis ground is located immediately to the left of the terminal block. External trip wiring is plugged into either JD1 or JD2.

• Each SSVP servo output can support one coil of a three-coil electro-hydraulic servo-actuator or paralleled coils from a two-coil servo. Based on the rated coil current, the user selects the current limiting resistor value to limit thermal stress on the current driver in case of a short output. Jumper, JP1 selects the resistor value for Servo 1 and JP2 is for Servo 2.

• The P28 power input for the PSVP and WSVO comes into the servo through the SSVP connector labeled P28IN. Switch, SW1 is used to enable the P28 bus that feeds the PSVP pack and the WSVO servo driver module. The LED labeled P28IN lights if 28 V dc has been applied to the SSVP.

• The P28ON LED will remain OFF until the user turns SW1 to the P28ON position. The RED LED on SSVP labeled PSVP_ONLY will light if a PSVO instead of a PSVP I/O pack is accidentally plugged into the JA1 connector.

OPERATION:

Each of the servo output channels is designed to drive a single coil or parallel coils. The servo outputs are also designed to be paralleled as shown in the PSVP configuration section. Servo cable lengths up to 300 m (984 ft) are supported with a maximum two-way cable resistance of 15 Ω. Since there are many types of servo coils, a variety of bi-directional current sources are jumper-selectable.

A trip override relay K1 is provided on the terminal board, which is driven from the PPRO protection I/O pack. If an emergency overspeed condition is detected in the protection module, the K1 relay energizes, disconnects the servo output, and applies a bias to drive the control valve closed. This is only used on simplex applications to protect against the servo amplifier failing high, and is functional only concerning the servo coils driven from .

CONFIGURATION:

In a simplex system, servo 1 is configured for the correct coil current with jumper JP1. Servo 2 is configured with jumper JP2. In a TMR non-pilot/cylinder system, one servo from three different SSVPs provides the drivers needed for three coils. In this case, the LVDT inputs are fanned externally to all three SSVPs. All other servo board configuration is done from the ToolboxST application.

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FREQUENTLY ASKED QUESTIONS:

What is a Servo Input/Output Terminal Board?

A Servo Input/Output Terminal Board is a crucial interface used in automation and motion control systems. It acts as a bridge between a servo drive or controller and external devices such as programmable logic controllers (PLCs), sensors, actuators, or other peripherals. The board is designed to streamline connections, allowing signals to be efficiently transmitted between the servo system and its associated components.

What are the main functions of the terminal board?

The primary function of a Servo Input/Output Terminal Board is to facilitate the smooth operation of servo-driven applications by providing reliable input and output signal connections. It ensures proper signal conditioning, power distribution, and electrical isolation where necessary. The board helps in organizing wiring, reducing electrical noise, and enhancing the overall efficiency of servo motor operations in industrial and robotic applications.

Which servo drives are compatible with this terminal board?

Compatibility depends on the specific make and model of the terminal board. Some boards are designed for universal use with multiple servo drives, while others are manufacturer-specific. It is essential to check the product datasheet or consult the supplier to ensure that the terminal board you select is suitable for the servo drive you intend to use.

What input voltage does the board support?

The supported input voltage varies depending on the design and application of the terminal board. Common voltage levels for control signals include 5V, 12V, or 24V DC. Some models also feature adjustable voltage levels to accommodate different system requirements. It is recommended to verify the voltage specifications to avoid compatibility issues or potential damage to connected devices.