Hach sc100TM installation manual Alarms and Relays, Connecting the Relays, Disconnect Power

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Installation

3.3 Alarms and Relays

The controller is equipped with three unpowered relays rated 100–230 V ac, 50/60 Hz, 5 amp resistive maximum. See the sensor manual for relay setup details.

3.3.1 Connecting the Relays

Danger: Relay loads must be resistive. User must externally limit current to the relays to 5 Amps by use of a fuse or breaker.

Danger: ac power terminals are designed for single wires. Do not use more than one wire in each terminal.

The relay connector accepts 18–12 AWG wire (as determined by load application). Wire gauge less than 18 AWG is not recommended.

The controller contains three relays designed for use with high voltage (greater than 30V-RMS and 42.2V-PEAK or 60 V dc). Refer to Figure 3-17for connection information. The wiring is not designed for low voltage connections. Relay must not be powered from the same wiring used to power the controller. See the sensor manual for relay setup details.

The Normally Open (NO) and Common (COM) relay contacts will be connected when an alarm or other condition is active. The Normally Closed (NC) and Common relay contacts will be connected when an alarm or other condition

is inactive or when power is removed from the controller.

Figure 3-17 Alarm and Relay Connections

S1

J4

J1

 

J3

 

 

 

 

 

J5

 

J2

 

 

 

 

 

 

 

 

 

 

 

 

 

1 2 3

 

 

 

 

 

 

 

U5

 

 

 

 

 

 

 

 

 

 

 

F1

F2

RELAY A

 

J5

 

 

 

 

 

 

 

U9

 

 

 

 

 

 

NETWORK

NC COM

NO

NC COM

NO

NC COM

NO

 

INTERFACE

 

RELAY A

 

RELAY B

 

RELAY C

 

 

CARD

 

 

 

 

 

 

 

 

J6

 

 

 

 

 

 

J6J7

RELAY B

RELAY C

Disconnect

Power

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Contents Hach sc100 Controller Table of Contents Section Specifications General Product Information Safety InformationPrecautionary Labels General InformationCustomer Supplied Items Section InstallationMechanical Installation InstallationController Dimension Illustrations Panel Mount Cut-out Dimensions Installation Using the Optional Sun Shield Sun Shield Kit ComponentsSun shield Hole pattern for mounting controller Vertical or Horizontal Pipe Mounting the Controller Installation Mounting the Controller10 Panel Mounting the Controller Electrical Installation Installation in ConduitInstallation Using a Power Cord Power cord strain relief Conduit strain relief Wiring for Power at the Controller14 Wiring Connections Power Wiring Information15 Local Disconnect for Power Cord Alarms and Relays Connecting the RelaysDisconnect Power Installation Connecting the Analog Outputs Recorder Wires Circuit Board PositionOutput Connections at Terminal Block J6 Terminal Number Terminal Designation Wire Color Connecting/Wiring the Sensor CableModify the controller for sensor hard-wiring as follows Wiring the Sensor at Terminal Block J520 Hard-wiring the sensor Connecting the Optional Digital Output21 Network Card Position in the Controller Network Connections at Terminal Block J1Cleaning the Controller Section MaintenanceCat. No Replacement PartsReplacement Items AccessoriesInformation Required Section How to OrderTechnical and Customer Service U.S.A. only A. CustomersLatin America, the Caribbean, the Far East, Section Repair ServiceUnited States CanadaLimited Warranty LimitationsLimitation of Remedies Emissions Product SafetyCompliance Information ImmunityFCC Part 15, Class a Limits Compliance InformationAdditional Emissions Standard/s include Index Hard-wired electrical applications

sc100TM specifications

The Hach sc100TM is a versatile and reliable device designed for monitoring and controlling water quality in various applications. Its robust features make it an essential tool for environmental scientists, water treatment facilities, and industrial processes. The sc100TM is equipped with a user-friendly interface that allows for easy navigation and configuration, ensuring quick implementation in various settings.

One of the standout features of the sc100TM is its multi-parameter capability. This device is designed to monitor a range of water quality parameters, including pH, dissolved oxygen, turbidity, and temperature, among others. This flexibility allows users to conduct comprehensive water quality assessments without the need for multiple devices, thereby reducing costs and maximizing efficiency.

The sc100TM employs advanced digital sensor technology that ensures high accuracy and reliability in readings. These sensors are designed to provide consistent performance even in challenging environments. The device is also compatible with a wide range of Hach sensors, enabling users to customize their monitoring solutions based on specific requirements.

In addition to its measurement capabilities, the sc100TM features built-in data logging and reporting functions. This allows users to track water quality trends over time, facilitating informed decision-making and compliance with regulatory standards. The data can be easily exported for further analysis or reporting, making it an essential companion for environmental monitoring and compliance activities.

Connectivity is another critical aspect of the sc100TM. With options for wireless data transmission, users can access real-time data remotely, promoting better monitoring and quicker response to any changes in water quality. This feature is particularly beneficial for facilities that require constant monitoring, as it enables quick interventions when necessary.

Another significant advantage of the sc100TM is its durability and design. Constructed to withstand harsh operating conditions, the device is both weatherproof and suitable for various industrial environments. Its compact design also allows for easy installation in tight spaces, making it adaptable to different setups.

In summary, the Hach sc100TM sets itself apart as a powerful tool for water quality monitoring. With its multi-parameter capabilities, advanced sensor technology, comprehensive data logging, and connectivity features, it provides users with the capability to maintain compliance and enhance water quality management strategies effectively. Whether in a laboratory or a field setting, the sc100TM is designed to meet the demands of modern water quality monitoring.