Dot-x SERIES Spécifications télécharger pdf (Page 45)

DOTX-45 Dissolved Oxygen System Part 6 – Configuration

DOTX-45 44 -

Fail Out This function enables the user to define a specified value

that the main current output will go to under fault conditions.

When the Relay Option Board is installed, the display will

read Fail Out #1. When enabled to ON, the output may be

forced to the current value set in Fail Val (next item.) With

the Fail Out setting of ON, and a Fail Val setting of 6.5 mA,

any alarm condition will cause the current loop output to drop

outside the normal operating range to exactly 6.5 mA,

indicating a system failure that requires attention.

Press ENTER to initiate user entry mode, and the entire

value will flash. Use the UP arrow key to modify desired

value; selections are ON, OFF. Press ENTER to store the

new value.

Fail Val Sets the output failure value for Iout#1. When Fail Out

above is set to ON, this function sets value of the current

loop under a FAIL condition. When the Relay Option Board

is installed, the display will read Fail Out #1. The output

may be forced to any current value between 4-20 mA.

Press ENTER to initiate user entry mode, and the entire

value will flash. Use the UP arrow key to modify desired

value; selections are between 4mA, and 20mA. Press

ENTER to store the new value.

AC POWERED UNITS ONLY

Fail Out #2 This function sets the fail-mode of current loop output #2

under a FAIL condition. The settings and operation are

identical to Fail Out for output #1.

Fail Val #2 This function sets the value of current loop output #2 under a

FAIL condition. The settings and operation are identical to

Fail Out for output #1.

AC POWERED UNITS ONLY

*Failsafe This function allows the user to set the optional system

relays to a failsafe condition. In a failsafe condition, the relay

logic is reversed so that the relay is electrically energized in

a normal operating state. By doing this, the relay will not

only change state when, for example, an oxygen limit is

exceeded, but also when power is lost to the controller.

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 68 69

Pas de commentaire

Dot-x SERIES Spécifications Page 45