Omega Vehicle Security DPS3300 manual Setup, Deviation Mode, Difference Mode

Deviation Mode

In deviation display mode, DPS3300 Series will show the differential between a pre-programmed setpoint and process variable being monitored on each channel by the scanner. Individual setpoint for each channel is programmed during CH Setup and can be any value over the range of selected scale or thermocouple being

used.

Types of Deviation Displays

There are two different ways of displaying channel deviation from their setpoint values:

a)The first one is a momentary display in which the deviation is indicated for a short time. Following this brief display time, the unit reverts to its normal mode of operation (scanning, differential, timer etc.). To achieve this, first select the channel whose setpoint deviation is desired. This is done by pushing the CH. SEL key. Next, push the DATA key twice. The first push displays the rate/minute value. The second push will display the deviation value. Before showing the deviation, the display will read 'CH1 - SP' ( for CHannel 1 SetPoint).

b)The second method of displaying deviation is by selecting the 'dSP dEN' option when programming the Display Option during the SYS Setup. If this method is selected, the display will scan through all the active channels and display their deviation. The display format is 'd2 1234' (d stands for deviation).

The unit can also be put on HOLD at any channel by pushing the SCN/HLD key. If any other channel's deviation is desired, it may be obtained by pushing the CH. SEL key. If an attempt is made to hold the display on a channel that has been turned off, then the unit indicates this by displaying 'CHx OFF' (x=channel #). DPS3300 Series will keep track of all other parameters while programmed for this mode (i.e. limits, peaks, rate, process value, channel differential etc). All of these may be displayed by pushing the respective keys.

Difference Mode

In this mode the system continuously displays the difference of process variable between any two selected channels. The two active channels are selected during SYS Setup mode. To remind the operator of the current display mode and also the two channels, the display flashes the channel numbers every few seconds (e.g. 'CH1 - CH2' for displaying difference between channel #1 and channel #2).

If the unit is not programmed for difference mode, the differential between any two of the seven channels can be briefly displayed by pressing the DATA key.

The procedure for doing so is to first select the channel whose differential with another channel is desired. This is done by pushing CH SEL key. Each push on this key will display the selected channel in the format 'CHANEL x'(x=channel #). When the desired channel has been selected, press the DATA key three times. The first push will display the rate of process change on that channel. The second push will show the process deviation from the programmed setpoint. The third push will flash a display of the form 'CH1 - CH2' and then a differential value. Additional pushes on DATA key will sequence thru the channels and will be indicated as below:

CH1 - CH3, CH1 - CH4, CH1 - CH5, CH1 - CH6, CH1 - CH7, CH1 - SP

SETUP

Setup mode provides a means to customize the monitor to suit a particular application. It allows programming such parameters as temperature units, limits, display mode, relay deadband, etc.

SETUP mode has 2 sections:

a)SYS setup section to set system parameters

b)CH setup section to set Channel parameters for each channel.

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