Vektron Corporation - MTS Multivariable Trip Switch

Description

The Multivariable Trip Switch (MTS) supplies a stand-alone safety shutdown solution that can range from simple shut-off of a pump or motor to part of a larger system solution. The MTS works with Honeywell Smartline® field instruments or with any analog instrument to provide a configurable high or low trip. A second relay and one analog repeat output are optionally available.

The MTS is compatible with all Honeywell Smartline transmitters, including the SMV 3000 Smart Multivariable Transmitters, ST 3000 Smart Pressure Transmitters, SCM 3000 Smart Coriolis Mass Flowmeters, STT 3000 Smart Temperature Transmitters, the SGC 3000 Smart Gas Chromatograph, and MagneW 3000 and MagneW 3000 PLUS Smart Flowmeters. In addition, the MTS works with any of Honeywell's DE control system interfaces (STDC, STI-MV). Honeywell's hand-held communicator, the SFC Smart Field Communicator, and the PC-based SCT 3000 Smart Configuration Toolkit may be used with no disturbances to the analog repeat output or status.

The MTS may be installed without disconnecting or disrupting the existing installation and may be used stand-alone or as an addition to an integrated control solution.

Benefits

ZERO ERROR digital PV trip.
One model for DIGITAL or ANALOG inputs.
Secure bumpless digital communication.
Access to all variables.
Leverages wiring savings associated with multivariable transmitters.
Positive digital trip action avoids process upsets.
Independent transmitter status output differentiates a maintenance problem from a process problem.
Enables full digital, non-bumping communications for any application.
Increases analog accuracy 80% !
NO calibration or special configuration tools are required.
Allows elimination of Hi/Hi and Lo/Lo alarms.

Safety System Advantages

The MTS provides a cost effective zero-error digital shutdown solution. The independent "smart status" output enhances the speed safety shutdown systems are able to respond by tracking the transmitter's status. "Smart status" also eliminates the need for separate Hi/Hi and Lo/Lo trips. The MTS fully supports forced I/O manual mode for validation testing of safety shutdown system. Multiple MTS units may be used with the same transmitter.

The MTS design has taken into consideration the emerging requirements of IEC 1508.

How It Works

The MTS monitors a single transmitter's digital PV/SV or analog signal and compares its value with the configured trip point. With a DE signal, the MTS also provides an independent "smart status" derived from the digital transmitter's status and MTS module status. The "smart status" may be OR'ed with the PV/SV trip state.

The compact module design is suitable for DIN rail mounting and is intended to be mounted within an appropriate enclosure. The MTS operates from a single +24VDC source and is internally short-circuit protected.

The MTS design has taken into consideration the emerging requirements of IEC 1508.

Features

Works with DE or ANALOG signals.
0 to 99.9% trip range.
Two relays, each 5A @ 250VAC.
Independent transmitter status relay.
Optional analog repeat output with fail-safe low/high/LKG.
"Smart status" LED indicator.
Configurable forced I/O manual mode action.
Compatible with 4 or 6 byte DE protocol modes.
Modular DIN rail mount.
Test mode.
CE Mark and CSA

Digital Vs. Analog Input

	Digital Input	Analog Input
Trip Error	0	±1.0%
Resolution	16 bits	8 bits
Hysteresis	0.25%	2%
Response Time	25 msec.	60 msec.
Analog Repeat Output	YES	NO
Multivariable Capability	YES	NO
Independent Transmitter Status	YES	YES
SV Temperature Capability	YES	NO
Bumpless Communication	YES	NO

Compatibility

The MTS module is fully compatible with all Honeywell DE products, all 3rd party DE products, and commercially available "smart" safety barriers. It carries the CE mark and is CSA approved.

Ordering Information

MODELS:   MTS-102 (no analog repeat output)
                 MTS-112 (with analog output)

OPTIONS:  (click on this link for option info)

Specifications

No. Input Channels:	1
Input Types:	DE input: Honeywell DE, 4 or 6 byte, multivariable broadcast formats A thru F [ listen only] Analog input: 4-20ma. or 1-5 volts
Input (Loop) Loading:	10 Kohms, min.
DE PV/SV Selection:	PV1, PV2, PV3, PV4 or SV1 (switch configurable)
Trip Range:	0 to 99.9%, in increments of 0.1%, LOW or HIGH
Trip Error:	DE input: Zero, Analog input: ±1.0%
Trip Point Hysteresis:	DE input: 0.25%, Analog input: 2%
Throughput Delay:	DE input: 25 msec., Analog input: 60 msec., max.
Status Relay:	1 Form A and 1 Form B, 5A @ 30VDC, 250VAC, 0.1HP
Trip Relay:	1 Form A and 1 Form B, 5A @ 30VDC, 250VAC, 0.1HP
Analog Repeat Output [optional]:	1 @ 1-5 volts, nom. ( 0.045% F.S., into 10 Kohms load, min.
"Smart Status":	Transmitter status, forced I/O manual mode, DE signal integrity, MTS test mode and MTS fault
LED Indicators (5):	HIGH, LOW, STATUS, RELAY, DE
Test/Validation Mode:	Trips relays (de-energized), LEDs indicate BAD status, analog output forced to 3.00 volts
Field Communicator Interaction:	No change to PV/SV value or Status state
Power Supply:	+18VDC to +30VDC, +24VDC nom. @ 80mA. typ (excludes transmitter)
Connectors:	Screw type, compression, removable, keyed
Module Size:	4.51"(H) x 0.89"(W) x 3.9"(D)
Operating Temperature:	0°C to +60°C, ambient
Enclosure/Mounting:	IP 20 / 35 mm DIN Rail (EN 50022) mounted equipment
Regulatory Approvals:	CE Mark (Europe), CSA Certification (Canada)

Manufactured in the USA from US and imported parts