Owner's manual

ManualsBrandsCla-Val ManualsEquipment131VC Series

Electronic Control Systems

Optional Remote Control

Modem

Computer

131VC

131-01

Control Valve

Signal Transmitter

4-20 mA

• Electronic Control of Hydraulic

Cla-Val Valves

• Programmable Monitoring and

Control of Flow, Pressure, Delta P,

Level or Valve Position

• Accurate Control of Valve Speed and

Response

• Remote Set-Point Control

• Security System - Prevents

Unauthorized Changes

• Control Backup Systems in the

Event of an Emergency

The Cla-Val 131VC-1 Electronic Control System is

designed to achieve unprecedented valve control

accuracy and stability. Ideal for remote valve control,

the 131VC-1 Electronic Control System provides the

interface between SCADA system computers and

hydraulic control valves sites.

Electronic Control of Hydraulic Valves

The 131VC-1 Electronic Control System is designed to work in

conjunction with Cla-Val 131 Series hydraulic control valves—

a combination that takes advantage of the simplicity of

hydraulic valve operation and the control possibilities available

with electronics.

The 131VC-1 Electronic Control System receives transmitted

signals and activates dual solenoid pilots on the hydraulic con-

trol valve. These pilots direct hydraulic pressure within the sys-

tem to position and regulate the valve. By continuously com-

paring system conditions to the programmed set-point, the sys-

tem is automatically maintained at the desired value.

Additional important control features, unique to this type of

valve control, are offered as standard. They are designed for

user friendly operation and system safety and are addressed in

this brochure.

Key Advantages

• Proven reliable hydraulic control valve

• Low electric power requirement

• Solid state electronic components

• No motors, bearings, bushings or packings to

wear out or leak

We Not Only Sell Valves—

We Provide Solutions

SERIES

Summary of content (8 pages)

PAGE 1
SERIES 131VC Electronic Control Systems • Electronic Control of Hydraulic Cla-Val Valves • Programmable Monitoring and Control of Flow, Pressure, Delta P, Level or Valve Position Signal Transmitter • Accurate Control of Valve Speed and Response 131-01 Control Valve • Remote Set-Point Control • Security System - Prevents Unauthorized Changes 4-20 mA • Control Backup Systems in the Event of an Emergency The Cla-Val 131VC-1 Electronic Control System is designed to achieve unprecedented valve control a
PAGE 2
How it Works 3. Valve Actuation Set-point command is received from a remote location or entered via the key pad into the Electronic Valve Controller. The Electronic Valve Controller compares the feedback signal from the transmitter to the set-point. If the deviation exceeds the deadband, the valve control system is activated. The Electronic Valve Controller actuates the solenoid controls, causing the valve to modulate as needed to regain the set-point condition. Set-Point Command Devitation 2.
PAGE 3
Features Alarm - Programmed to signal when system conditions exceed a desired value or in the event of a system component failure. It can be configured to be latching or non-latching, normally open or normally closed contact with deadbands. Absolute Alarm - Activates when the process variable exceeds alarm set-point. It can be either high and/or low acting. Deviation Alarm - Shifts as the set-point is changed. It can be symmetrical or asymmetrical. Fault Alarm - Activates when the process variable is lost.
PAGE 4
How To Order 31VC -1 1 Order Output 1: Control Code Mechanical Relay (5 amp) Analog (milliamp) Solid State Relay (triac) (1 amp) Output 1 2 3 2: Control, Alarm, or Retransmission Mechanical Relay (5 amp) Analog (milliamp) Solid State Relay (triac) (1 amp) Output 1 2 3 3: Control, Alarm, Retransmission, or Loop Power 1 2 3 5 Mechanical Relay (5 amp) Analog (milliamp) Solid State Relay (triac) (1 amp) Loop Power Output 4: Alarm, Retransmission, or Loop Power Mechanical Relay (0.
PAGE 5
Programmable Control Features VALVE RESPONSE TIME Faster Slower DEVIATION BAND DEVIATION BAND 100% Lower Dead Band 2 Higher OU PR TP OP UT OR CI TIO RC N UI AL TN O. SOLENOID CYCLE TIME 50% AL O.
PAGE 6
Applications Pressure Transmitter Flow Transmitter 131-01 Valve 131-01 Valve Pressure Control Flow Control Downstream pressure control is easily accomplished. The pressure transmitter range should be selected to provide the desired accuracy of pressure control. The set-point of the controller can be changed by the remote command signal or by manual adjustment at the controller panel. For pressure sustaining control, the transmitter is located upstream of the valve and the solenoid outs are reversed.
PAGE 7
Power Failure Options POWER AUX SUPPLY Power AC POWER AC DC Power POWER 131-01 Valve 131-01 Valve Maintain Valve Position Direct Voltage Electronic Control When there is a power failure, using the standard Model 131-01 Control Valve, the pilot control solenoids lock in the closed position and hold the main valve in the last control position. Customer supplied battery power, with a continuous charging system, operates the valve solenoids and controller in the event of power failure.
PAGE 8
Installation The electrical power used to energize the solenoid pilot system on the valve is routed through the 131VC-1 Electronic Control System. Because of practical limitations on wire size and distance, we recommend locating the controller near the valve itself. Transmitter signals of 4-20 mA can travel great distances without difficulty, therefore, the controller does not need to be near the signal transmitter.