PTI SENTRY TIM-100 - User Manual

Installation, Operation and
Serial Communication Programmer’s Guide
SENTRY™ Tool Interface Module (TIM-100/120)
and Program Module (TIM-200)
Section 1: General Description &Part Names
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1.1 General Description
About This Manual
This manual is intended for those responsible for programming a computer or tool to operate with
the SENTRY process exhaust control system through the use of serial communications.
Complete instructions for installing and operating a SENTRY system may be found in the
controller’s installation and operation manual (i.e. SENTRY 1000, SENTRY 1510, etc.).
This manual describes the following:
• Physical Installation (TIM-100/120/200 Only)
• Commonly Used Command Menu Parameters
• Operation in Manual, Analog and Serial Communication Modes
• Required Programming for Using Serial Communication
Description
The SENTRY TIM-100/120 is a microprocessor-based interface used in conjunction with many of
Progressive Technologies Inc. process exhaust controllers. The SENTRY TIM-100/120 allows
the user to communicate electronically with the process exhaust controller (such as the SENTRY
1000) for changing the set point and reading actual process exhaust values. It can be configured
at the PTI factory to be used with controllers that maintain constant pressure or constant flow.
The TIM-100/120 can be operated in stand-alone mode (manual mode), with a 0-5 Volt process
tool interfaced analog signal (analog mode) or with process equipment/facility computer interfaced
serial communications (serial mode).
Two primary configurations of the TIM-100/120 are offered: 1) TIM-100 with a graphics LCD and
keypad and 2) TIM-120 which supports the analog interface and serial communications without
the LCD and keypad interface.
TIM-100 TIM-120
Note:
• The TIM-120 is pre-configured for the accompanying SENTRY system. However, a Program
Module is required if access to the command menu is required.

Summary

General Description of SENTRY TIM-100;120

About This Manual

Overview of the manual's purpose and scope for programming the SENTRY system.

Part Names and Description

Identifies and describes the physical components of the TIM-100/120 unit.

TIM-200 Program Module

Details the optional Program Module for TIM-120 keypad and display access.

Keypad Operation Overview

Explains the function of the keys on the TIM-100/200 keypad for menu navigation.

Display Elements

Describes the various elements displayed on the TIM-100/200 screen.

Installation & Power-Up Procedures

CE Compliant Installation Note

Guidelines for CE compliance regarding installation height and environment.

Power Requirements

Specifies the DC voltage requirements for operating the TIM-100/120.

Cabling and Connections

Instructions for connecting the TIM-100/120, including Program Module and power.

Operating Mode Selection

Procedure for selecting the communication operating mode (Analog, Serial, Stand-alone).

Saving Parameter Data

Steps to permanently store configuration changes in the TIM-100/120 memory.

Serial Interface Configuration

Details for connecting and configuring the RS-422 or RS-485 serial interface.

Command Menu Details

Commonly Used Menu Entries

Explanations for frequently used menu items in the TIM-100/120.

Scaling Factors

Explains how displayed values are scaled for different SENTRY controllers.

Modes of Operation

Describes factory configurations for Pressure Mode and Flow Mode operation.

PID Control Loop Function

Details the PID closed loop algorithm used by the TIM-100/120.

System Operation

Manual Mode Operation

How to operate the SENTRY controller using the TIM-100/120 keypad.

Keypad Navigation

Describes the four keys used for menu navigation and parameter changes.

Manual Set Point Changes

Steps to change pressure or flow set points in manual mode.

Analog Interfaced Operation

How to enter set points via analog interface and interpret voltage signals.

Serial Interfaced Operation

How to enter set points via serial communication and use interrogation commands.

Serial Communication Programming

General Description & Commands

Overview of communication protocol, master/slave relationship, and commands.

Power-Up Clear Command

How to use the "A" command for initializing serial communication.

Set Point Commands

Format for sending pressure and flow set point commands to the TIM-100/120.

Read-Back Commands

How to request actual pressure or flow read-back values from the TIM-100/120.

Error Handling & Checksum

Explains error responses and the calculation of message checksums.

Troubleshooting, Specifications, Codes & Tables

Maintenance & Troubleshooting

Common problems, their causes, and corrective actions for the TIM-100/120.

General Specifications

Physical dimensions, power options, set point types, and environmental limits.

Serial Communication Specifications

Details on RS-422/RS-485, network length, nodes, and protocol.

Serial Communications Error Codes

List and explanation of error codes returned during serial communication.

Hex to ASCII Conversion Table

Reference table for converting hexadecimal values to ASCII characters.

Hex to Binary Conversion Table

Reference table for converting hexadecimal values to binary equivalents.

Technical Support & Warranty Information

Technical Support Calls

Contact information and procedures for obtaining technical support.

Warranty Policy

Details the warranty terms, conditions, and customer responsibilities.

Documentation Information

Notes on document copyright, proprietary information, and patent status.

Overview

1. Function Description
2. Important Technical Specifications (SENTRY TIM-100/120)
3. Important Technical Specifications (SENTRY TIM-200 Program Module)
4. Serial Communication Specifications
5. Usage Features
6. Maintenance Features

The SENTRY™ Tool Interface Module (TIM-100/120) and Program Module (TIM-200) are components of the SENTRY process exhaust control system, designed to facilitate electronic communication between a computer or process tool and the exhaust controller. This manual details the installation, operation, and serial communication programming for these modules.

Function Description:

The SENTRY TIM-100/120 is a microprocessor-based interface that enables electronic communication with various Progressive Technologies Inc. (PTI) process exhaust controllers, such as the SENTRY 1000, SENTRY 1510, and SENTRY 9000. Its primary function is to allow users to change set points and read actual process exhaust values remotely. The TIM-100/120 can be factory-configured for controllers that maintain either constant pressure or constant flow.

The module supports three operational modes:

1. Stand-alone mode (Manual Mode): Allows direct manual input from the user via a keypad and display (on the TIM-100 or with the TIM-200 Program Module for the TIM-120).
2. Analog mode: Interfaces with a process tool using a 0-5 Volt analog signal for set point control.
3. Serial mode: Communicates with process equipment or a facility computer via serial communications (RS422/RS485).

The TIM-200 Program Module is an optional accessory for the TIM-120. It contains an LCD display and keypad, providing access to the TIM-120's command menu, similar to the built-in interface of the TIM-100. The Program Module is primarily used for initial setup and servicing and is not required for normal operation once the TIM-120 is configured.

Important Technical Specifications (SENTRY TIM-100/120):

• Physical Dimensions:
  • Length: 8.32 inches (211.3 mm)
  • Width: 5.41 inches (137.3 mm)
  • Height: 2.33 inches (59.1 mm)
  • Weight: 2 lbs (0.9 kg)
• Power Options (Controller & TIM-100/120):
  • DC (User supplied): +15 to +24 VDC @ 650 mA (powers electronic circuitry and controller) and -15 to -24 VDC @ 50 mA (powers the display).
  • AC: PTI Universal Power Supply, 90 to 260 VAC, 47 to 63 Hz.
• Set Point Control Types:
  • 0 to 5 Volt Analog Interface
  • RS422/485 Serial Interface (up to 9600 baud)
  • Stand Alone Using Operator Keypad
• Cut-Off & Disconnect Devices:
  • Safety cut-off device: Internal cartridge fuse holder for a 5 x 20 mm, 0.8 amp fuse (PTI part #12270).
  • AC disconnect device: Relies on the process tool or house facility for AC mains disconnect and start/stop.
• Operating Environment:
  • Ambient temperature: 40-104° F (4-40 °C)
  • Relative humidity: 30 - 90% non-condensing
  • Altitude: Up to 6500 ft (2000 m) above sea level

Important Technical Specifications (SENTRY TIM-200 Program Module):

• Physical Dimensions:
  • Length: 7.54 inches (191.5 mm)
  • Width: 5.19 inches (131.8 mm)
  • Height: 1.54 inches (39.2 mm)
  • Weight: 1 lbs (0.4 kg)

Serial Communication Specifications:

• Serial RS-422: Four-wire, two differential pairs. Jumper JP6 removed, JP10 installed on circuit board.
• Serial RS-485: Two-wire, single differential pair. Jumper JP6 installed, JP10 removed from circuit board.
• Type: Dedicated Network.
• Length of Network: Maximum 4000 feet (1200 meters). RS485 guidelines provide length as a function of allowable distortion, minimum acceptable output voltage, terminating resistance, baud rate, and selected cable loop resistance.
• Nodes: Up to 64 uniquely addressable SENTRY TIM-100/120s on a given network. RS485 guidelines allow a maximum of 32 units (including host) on a single network; a repeater is required for additional units up to 64.
• Communication Rate: 9600 Baud.
• Data: 8 data bits.
• Characters: All messages between Host and SENTRY TIM-100/120s are made up of ASCII characters.
• Parity: No parity.
• Start bit: 1 start bit.
• Stop bit: 1 stop bit.
• Protocol: Two-pass with a two-character checksum for message transactions. Host initiates transaction, unit verifies command, executes, and returns acknowledgment with requested data. Checksums ensure secure communications.
• Interface Connector: RJ-12, 6-pin female connector on the SENTRY TIM-100/120. RS422 two differential pairs, multi-drop capability.

Usage Features:

• Keypad (TIM-100/200): Features four keys:
  • Asterisk Key [*]: Enables modification of a menu item.
  • Up Arrow [↑] and Down Arrow [↓] Keys: Scroll through menu items and select values/options.
  • Enter Key [ENT]: Enters changes into memory.
• Display (TIM-100/200): Provides real-time read-back of pressure/flow control, allows viewing and changing menu parameters.
• Contrast Knob: Adjusts display contrast.
• Address Switches: Used to set the base address of the TIM-100/120 for RS422/485 communication.
• Command Menu: Contains 71 individual entries, 64 directly accessible via keypad. Highlighted items in the manual are commonly used parameters.
• Scaling Factors: The display and menu items do not show a decimal point; an implied decimal point is used, with scaling factors (e.g., 100 for SENTRY 1510, 1000 for SENTRY 1000) depending on the controller model and parameter.
• PID Control Loop: The TIM-100/120 incorporates a PID closed-loop algorithm for controlling the SENTRY controller stepper motor during set point changes. The PTI piston regulator handles corrective control once the new set point is reached. In most applications, only the gain function of the PID loop is used, which is factory preset.
• Communication Operating Mode Selection: Users must select "SINGLE" for stand-alone/serial operation or "ANALOG" for analog communication via the command menu.
• Saving Operating Parameter Data: Changes made to menu items are temporary until explicitly saved to nonvolatile memory using the "SAVE DATA" function in the command menu. This involves a specific sequence of arrow key presses and an Enter key confirmation.
• Serial Communication Interface Programming: Requires programming the host equipment or computer to communicate with the TIM-100/120. Only three commands are essential: power-up clear, exhaust set point, and actual exhaust read-back.
  • Message Format: Commands consist of a start character (">"), address and data bank, single character command, hexadecimal data, two-character checksum, and carriage return ("J").
  • Power-Up Clear Command ("A"): Initializes communications after power-up.
  • Set Point Command ("S"): Commands the exhaust controller to a new set point (pressure or flow). Values are 12-bit (0-4095 decimal) hexadecimal, scaled relative to full-scale.
  • Actual Read-Back Command ("L"): Requests the actual process exhaust value (pressure or flow).
  • Checksum Calculation: Ensures message integrity by summing decimal values of ASCII characters (excluding ">"), dividing by 256, and converting the remainder to two ASCII-hex digits. A wildcard symbol "??" can be used instead of a checksum, though not recommended for message integrity.

Maintenance Features:

• No Preventive Maintenance: The SENTRY TIM-100/120 requires no preventive maintenance to ensure proper working order.
• Troubleshooting Table: A comprehensive table is provided to assist users in identifying and correcting common problems, such as:
  • Set point read-back is always zero (due to analog ground/power ground not connected or incorrect TIM-100/120 parameters).
  • All set points not being achieved or cannot change set point (due to "STPT MODE" improperly set, analog interface improperly installed, serial cable improperly installed/address not set, or incorrect TIM-100/120 parameters).
  • TIM-100/120 display not on (due to power not supplied, negative voltage lines not supplied, contrast not adjusted, or blown fuse).
• Fuse Replacement: In case of a blown fuse, the front panel can be removed to replace the internal 0.8 amp cartridge fuse.
• Technical Support: PTI provides technical support for troubleshooting. Users are advised to have model and serial numbers ready when calling.

PTI SENTRY TIM-100 Specifications

General

Brand	PTI
Model	SENTRY TIM-100
Category	Tools
Language	English