MKS Type T3B Butterfly Valve (with DeviceNet Interface)

Position control: The valve moves to the target position (set value) without feedback signal. The encoder can provide the user with the required feedback, but it is not used for closed-loop control.

Trip Points

Basic configuration: Includes 4 software trip points that can be adjusted through digital communication commands. The status changes when the pressure is above/below the set value; The trip point can be configured to monitor pressure or valve position (any combination), two of which can be mapped to hardware relays through auxiliary connectors.

Key parameters:

Hysteresis: default 10%, adjustable through digital commands, used to compensate for system noise and avoid "relay jitter", ideal value close to but not less than peak to peak noise.

Delay: The alarm status of the trip point needs to be continuously set for a set time (0-10000 ms, default 0) before reporting "ON". Different delay values can be set for different trip points (monitoring controller object pressure properties, trip point object valve position properties).

Direction: default "low" (when the pressure is lower than the set value, the trip point is activated, the LED lights up, and the pressure needs to be higher than the hysteresis value to release), can be changed to "high" through digital commands (when the pressure is higher than the set value, it is activated, and the pressure needs to be lower than the hysteresis value to release).

Top panel component

Connectors: Includes 5-pin miniature digital communication connector (DeviceNet communication interface), 25 pin D-type female auxiliary connector (sensor power supply, alarm relay output, RS-232 communication), 9-pin D-type male external power connector (valve power supply), and 2 15 pin D-type female analog sensor connectors (high/low sensor power supply and pressure input).

Indicator lights and switches:

Valve position indicator light: "OPEN" (red) lights up to indicate that the valve is fully open, and "CLOSE" (red) lights up to indicate that it is fully closed.

Manual valve switch: a button type switch that can manually drive the valve to the open/close position.

Trip point indicator light: It lights up green when the trip point is activated.

DeviceNet status light: including module status light (green/red dual color) and network status light (green/red dual color), the power startup sequence complies with the ODVA DeviceNet specification, the module status light is always green to indicate normal, and the red to indicate unrecoverable fault; The green constant light of the network status indicates that the communication link is normal and a connection has been established, the green flashing indicates online but no connection, and the red constant light indicates a serious link failure.

Configure switch:

Baud rate switch: 4-bit rotary switch, optional PGM (read from non-volatile memory), 125 Kb, 250 Kb, 500 Kbps.

MAC ID (Node Address) Switch: Two 10 bit rotary switches, set the node address (0-63), with ten bits on the left (MSD) and one bit on the right (LSD); When the address is greater than 63, it is equivalent to the "PGM" position.

Installation Guide

Unpacking and Inspection

Unboxing process: MKS uses professional packaging to ensure that the equipment is in good condition. After receiving it, it is necessary to check whether the valve is damaged, the connector is damaged, and other transportation damages are present. Do not discard the packaging materials until safety is confirmed.

Problem handling: If damage is found, immediately notify the carrier and MKS; If you need to return the device, you need to first obtain the ERA number (device return authorization number) from the MKS service center. The MKS calibration service center list is listed on the inside of the back cover of the manual; Only qualified personnel are allowed to install and debug, and ESD protection and operating procedures must be followed.

Standard accessories: including T3B unit, T3B with DeviceNet interface user manual, MKS T3B/T3P with DeviceNet interface supplementary manual (No. 138993-P1, installation needs to refer to this supplementary manual).

Interface cable requirements

Cable specification: Full metal braided shielded cable (correctly grounded at both ends) is required to comply with CE certification; MKS provides a full range of cables, and if self-produced, they must meet the following requirements: shielding layer covering all wires (insufficient aluminum foil or spiral shielding effect may affect compliance); The metal shell of the connector is in direct contact with the entire circumference of the cable shielding layer (to avoid reduced shielding effect caused by flying wires); Good contact between the connector and the controller housing (approximately 0.01 ohms, with grounding surrounding all wires); Consider voltage level, wire I ² R heating, IR voltage drop, capacitance and inductance of fast signal cables, and internal wire shielding requirements.

Connection method: Two shielding cable connection methods are provided (priority is to use cable clamps to fix the shielding layer, and if there is no cable clamp, the shielding layer can be twisted and fixed with washers), ensuring that the shielding layer is grounded and the wire is in contact with the shell.