Chromalox 1604 User Manual download pdf (Page 16)

energized during the ON status of the

instrument output (relay energized or SSR

output status 1).

n.C. = Set P10 to n.C. when the load is energized

during the OFF status of the instrument

output (relay de-energized or SSR output

status 0).

P11 = Current transformer range

This parameter is present only if P10 is different

from OFF or SP2 and it is programmable from 10

to 100 A.

P12 = Output 3 function

0 = Output not used for alarm 2.

1 = it is used as alarm 2 output and the alarm 2

is programmed as process alarm.

2 = it is used as alarm 2 output and the alarm 2

is programmed as band alarm.

3 = it is used as alarm 2 output and the alarm 2

is programmed as deviation alarm.

NOTE : The output 3 relay operates as a logic OR

between the alarm 2 and the "OUT 1 failure

detection" function.

P13 = Alarm 2 operating mode & OUT 1 failure

detection reset

Available only when P12 is different from 0 or P10

is equal to n.O or n.C.

H.A. = High alarm (outside for band alarm) with

automatic reset.

L.A. = Low alarm (inside for band alarm) with

automatic reset.

H.L. = High alarm (outside band) with manual

reset (latched).

L.L. = Low alarm (inside band) with manual reset

(latched).

NOTE:The "Out 1 failure detection" function

assumes only the selected reset type (manual or

automatic).

P14 = Programmability of the alarm 2

threshold and hysteresis values

Available only when P12 is different from 0.

OPrt = Alarm 2 threshold and hysteresis are

programmable in the operating mode.

COnF = Alarm 3 threshold and hysteresis are

programmable in configuration mode.

P15 = Alarm 2 threshold value

Available only when P12 is different from 0 and

P14 is equal to "COnF".

Range: For process alarm - within the range limits.

For band alarm - from 0 to 500 units.

For deviation alarm - from -500 to 500

units.

P16 = Alarm 2 hysteresis value

Available only when P12 is different from 0 and

P14 is equal to "COnF".

Range: from 0.1% to 10.0 % of the range

selected with P3 and P4 parameters or

1 LSD.

P17 = Threshold of the “Soft Start” function.

Threshold value in eng. units to initiate the "Soft

start" function (output power limiting) at start up.

Range : within the readout span.

NOTE: This threshold value will not be taken into

account when tOL = InF.

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Chromalox 1604 User Manual Page 16

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