Honeywell UDA2182 manual Relays Configuration Overview, Accessing Relays Menu

Configuration

6.8 Relays Configuration

Overview

Programming the relays consists of selecting the relay type, identifying the input parameter, which activates the relay and selecting whether the relay is energized when the input parameter is on or off. The Relay group lets you select a relay type for up to four relays. When planning relay operation, it is wise to consider the state of the relay when power is not applied to the UDA. The invert parameter of the relay configuration is helpful in assuring that the Off device state is consistent with the relay normal operation.

Each relay output can be independently configured to be one of four basic types:

A Digital Output Relay allows connection to any Alarm, Alarm Group, Monitor, Logic, Digital Input, Input Fault, Output Fault, Hold Key, Pharm Warn, Pharm Fail, Control Alarms, Input 1 and 2 Rinse and Cal Pts, Cycle on or fail.

Time proportional output is a form of a process variable transmitter or control output that pulses the relay as a pulse width modulated signal that is proportional to the input signal over a configured input range. The Time Proportional cycle time is configurable between 0.1 and 999 seconds while the duty cycle is directly proportional to the selected input signal.

Frequency proportional output is a form of a process variable transmitter or control output that pulses the relay as a pulse rate that is proportional to the input signal over a configured input range. The maximum frequency is set by the cycle time that is configurable between 0.1 and 999 seconds. The pulse duration is fixed and configured in seconds by an on time parameter.

On / Off output relay turns On when the input is greater than the high and low ranges and turns off when the input is less than the high and low ranges. This allows an on / off control action with an adjustable dead band. The On state is controlled by a cycle time and on duration parameters such to achieve a selectable output proportion. An invert parameter is available to allow inverse action such that the relay will cycle ON when below the low range limit.

Pulse Output relay will provide a fixed duty cycle when the applied input signal is ON. The cycle time and pulse duration are configurable parameters. The relay will be OFF when the applied input is OFF. An inverse parameter allows the input to be inverted for reverse behavior.

Accessing Relays Menu

•Press Setup to display the Main menu.

• Use the keys to select “Relays” then press Enter to enter the sub-menu.

•Relay 1, Relay 2, Relay 3 or Relay 4 and their associated parameters are available for selection.

76 UDA2182 Universal Dual Analyzer Product Manual January 2009