DELTAV KJ3203X1-BA1 VE4001S2T2B4/CE4001S2T2B4 module

Description

Two CE4001S2T2B4 Ovation Valve Positioner (VP) cards (Primary and Backup) operate as a

Primary backup pair to control a single steam valve (see Figure 25-1). The steam

valve is fifitted with two LVDTs, one connected to each Valve Positioner. Each VP

then drives one coil in a high pressure hydraulic servo valve. The CE4001S2T2B4 coils are

completely isolated.

The Valve Positioners communicate serially to determine which VP should be

Primary, and which should be Backup. Critical parameters of the redundant

subsystem are exchanged over the serial link. These CE4001S2T2B4 critical parameters are also

exchanged over the Ovation bus, thus providing a redundant data path.

The Backup VP suspends its CE4001S2T2B4 software PI routine, and replicates the servo output of

the Primary. It then takes over control if the Primary fails. There are three types of

failures that the subsystem will detect and respond to:

• Hardware Failures – Each VP continuously runs internal diagnostics and will

cease operations if a diagnostic fails. A failure is indicated when both the serial

communications and Ovation line watchdog timers expire. The VP card

continuously executes CE4001S2T2B4 these diagnostics:

— Microcontroller RAM

— Ovation RAM

— EPROM Checksum

— DA Converter Readback

— Ovation Watchdog Timer

— Redundant Communications Watchdog Timer

• Coil Drive – If the Primary VP detects a shorted or open servo coil, it will

transfer control to the Backup VP. There is a customer setup requirement

described in the section on servo coil failures.

• LVDT Failures – LVDT failures are detected by measuring the derivative of

position feedback. As with the servo coil, there are setup requirements that

enable the detection of LVDT problems. The CE4001S2T2B4 requirements are described in the

section on LVDT failures.

The VP pair utilizes the SLIM serial port for VP-to VP communications. The serial

link is a VP-to-VP connection, not the “party-line” bus utilized with the SLIM.

Why are the prices of many products of our company more competitive?
(1) Source purchase to reduce the price difference in the intermediate phase
(2) Stable channel and more guaranteed supply
Lead time problem
(1) For the spot products in stock, the delivery can be arranged on the same day after the contract payment is signed
(2) Order products and deliver according to the quoted delivery date
Xiamen Xiongba adheres to the enterprise philosophy of “improving the value of spare parts supply chain”,
For the simple purchase procedure of spare parts, ensure that they are delivered to the site in a timely manner, and help users reduce the risk of downtime caused by the shortage of spare parts
The emergency spare parts support service is complete, and the user can customize the spare parts. The quality of the spare parts is reliable. All the spare parts provided enjoy a one-year super long warranty
Spot stock, fast response, reduce user capital investment, improve spare parts utilization, spare parts replacement!

Details: If you need urgent delivery orders, please feel free to contact us, and we will try our best to meet your needs.
Price problem: If you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.
Contact us:+86 181 0693 7731
Mail: 2872270648@qq.com
Contact: Chen