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SIGNAL-20P DESIGN AND OPERATING PRINCIPLES

№ Program name Program description Initial

status

"Turn on with

temperature

increasing"

If an alarm loop has entered “High tem-

perature” status**, that is, the tempera-

ture has exceeded "temperature high"

threshold then switches ON

OFF

"Turn on with

temperature

decreasing"

If an alarm loop has entered “Low tem-

perature” status**, that is, the tempera-

ture has exceeded "temperature low"

threshold then switches the relay ON

OFF

Remarks:

* - The relay status is defined by the statuses of assigned loops

** - Only programmable auxiliary alarm loop (type 12) can enter the statuses

“Temperature High” or “Temperature Low” and only if these statuses are

programmed for this loop

Table 6: The correspondence between the output minus lead

voltage and the status of the outer circuit

Norm Open failure Short failure

Output is

off

Output is

off

The output voltage is

within the range from

0,35V to 4,0V

less then

0,05 V

more than

4,1 V

more than

4,5 V

less then

0,3 V

4.3 Settings

The device settings specify its operating in whole and give the net

settings when operating in network mode as the part of the Orion safety

system. They are presented by the Table 8.

Table 7: The device settings

Parameter Description Range

Voltage Analysis

Defines the method of the transi-

tion to the “Power Failed” mode in

case of one or two input power

supplies having been out of range

On / Off

Net Address

Gives the net device address

when connecting to the RS-485

interface

1…127

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 56 57

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