dIXEL XC450D Kullanım Talimatları - Sayfa 3

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dIXEL

did

LL liquid alarm delay: 0 ÷ 255 min. Delay between the detection of the LL

liquid alarm condition and its signalling.

iP4

Alarm stop polarity from pressure switch: oP: the digital input is activated by

opening the contact; CL: the digital input is activated by closing the contact.

iP5

By-pass input polarity: oP: the digital input is activated by opening the contact;

CL: the digital input is activated by closing the contact.

ALIP

Alarm input for compressors and fans polarity

oP: the digital input is activated by opening the contact;

CL: the digital input is activated by closing the contact.

COMPRESSORS REGULATION

Pbd

Proportional band or neutral zone width (0.10÷10.0 bar). The band (or zone)

is symmetrical compared to the target set point, with extremes: SET-Pbd/2 and

SET+Pbd/2.

Onon

Minimum time between 2 following switching ON of the same compressor

(0÷255min).

oFon

Minimum time between the switching off of a compressor and the

following switching on (0÷255min)

don

Time delay between the insertion of two different compressors (0÷99.5

min; ris. 10s).

doF

Time delay between switching off of two different compressors (0÷99.5

min; ris. 10s).

odo

Count time with by-pass input ON (0÷255min)

LSE

Minimum set point for compressors.

HSE

Maximum set point for compressors.

ALARMS – COMPRESSOR SECTION

PAo:

Alarm probe exclusion at power on. it is the period starting from instrument

switch on, before an alarm probe is signalled. (0÷255 min). During this time if the

pressure is out of range all the compressor are switched on.

LAL:

Low pressure (temperature) alarm: The measurement unit depends on dEU

parameter. It's always subtracted to the set point. When the value SET-LAL is

reached the A03C alarm is enabled, (possibly after the tAo delay time).

HAL:

High pressure (temperature) alarm: The measurement unit depends on dEU

parameter. It's always added to the set point. When the value SET+HAL is

reached the A04C alarm is enabled, (possibly after the tAo delay time).

tAo:

Low and High pressure (temperature) alarms delay: (0÷255 min) time

interval between the detection of a pressure (temperature) alarm condition and

alarm signalling.

SPr:

Number of steps engaged with faulty probe. (0÷#compr).

OTHER

tbA

Alarm relay silencing: by pushing one of the keypad buttons. no= alarm relay

stays on; yES= alarm relay is switched off by pushing any keys.

OAP

Alarm relay output polarity: cL=closed when activated; oP= opened when

activated

oFF

Switching ON/OFF enabling from keyboard: (no = disabled; yES= enabled)

It permits the switching ON/OFF of the instrument by pressing the SET key for

more than 4s.

Ad1:

Compressors address (1 –247) It is used in monitoring system.

Ad2:

Fans address (1 –247) It is used in monitoring system.

Ptb

Parameter table code: readable only.

rEL

Software release for internal use.

Pr2

Access to the protected parameter list (read only).

TYPE OF REGULATION

- OFF: the instrument doesn't make the regulation; it detects the LL liquid alarm and the

P1 broken transducer.

- REGULATION ON: when the digital input is activated or set manually by pushing the

DOWN key for 3s. Compressors depends on th SetC and Pbd parameters.

- RESET REGULATION ON: turning off and on the controller, or with DOWN key during

3".

Functioning mode:



rtY=db neutral zone: If the pressure (temperature) is inside this zone the controller

maintains the same number of loads switched on and off, without changing anything.

When the pressure (temperature) go out from the zone, regulation starts.



rtY=Pb proportional band: The regulation band (Pbd) is divided into as many parts

as there are stages. The numbers of stages switched ON is proportional to the value

of the input signal: when this distances itself from the target set point and enters the

various bands, the compressors are switched ON, to be then turned OFF when the

signal brings near the set point. In this way if the pressure is greater than regulation

band, all the compressors are on, if the pressure (temperature) is lower than the

regulation band all the compressors are off.

SAFETY TIMES

A load is turned ON only if the safety times onon, oFon, donF are over.

Regulation stops when the pressure (temperature) come back into the neutral zone.

CONFIGURATION AND ALARM DIAGNOSTICS

DIGITAL INPUTS FOR COMPRESSOR SAFETY

ALIP: It establishes if the input is activated by closing (ALIP=cL) or by opening (ALIP=oP)

the id1, id2, id3 contacts.

Actions

Every time one input is activated the corresponding output is turned off.

P1 probe failure alarm

It is generated by failure in the transducer.

SPr: number of steps engaged with faulty probe.

1592001620 XC450D GB R1.0 10.07.2009

Operating instructions

It is an alarm signal with the activation of: relay, buzzer and P1 and P2 code display.

Recovery

Automatic as soon as probe restarts working.

HA, LA: LA2 High and low pressure (temperature) alarms

This alarm signals that the pressure (temperature) is out of limits established by

parameters LAL – SetC+ HAL.

The tAo and AFd parameters set the delay between alarm condition and alarm signalling.

Action

The alarm is signalled with standard action. The outputs are unchanged.

ALARM MUTING

Press any buttons to silence the buzzer during an alarm condition.

Hold pressed for more than 3 seconds switch off the alarm relay during an alarm condition

PARAMETERS – DEFAULT VALUES

Name

SEtc

oA4

oA5

oA6

rtY

StY

PA04

PA20

cAL

i1C

did

iP4

iP5

ALiP

Pbd

onon

oFon

don

doF

odo

LSE

HSE

PAo

LAL

HAL

tAo

SPr

tbA

OAP

oFF

Ad1

rEL

Ptb

Pr2

XC450D

bar

Level

Description

3.0 --

Set Point for pressure

Cpr Pr2

Output 4 configuration

Cpr Pr2

Output 5 configuration

Cpr Pr2

Output 6 configuration

db Pr2

Type of regulation

yES Pr2

Compressor rotation

0,5 Pr2

Adjustment of read out for the Probe at 4mA

8,0 Pr2

Adjustment of read out for the Probe at 20mA PA04 ÷ 51.0 bar

0 Pr2

Probe 1 calibration

DIGITAL INPUTS

CL Pr2

Liquid alarm polarity

60 Pr2

Liquid alarm signalling delay

CL Pr2

Alarm stop polarity from pressure switch

CL Pr2

By-pass input polarity

CL Pr2

Alarm input for compressors and fans polarity

REGULATION

0.6 Pr2

Proportional band of compressors

Minimum time between 2 following switching

5 Pr2

Minimum time between the switching off and

2 Pr2

Time delay between the insertion of two

0,3 Pr2

different compressors

Time delay between switching off of two

0,1 Pr2

different compressors

10 Pr2

Regulation delay on start-up

0,5 Pr2

Minimum set point for compressors

4,0 Pr2

Maximum set point for compressors

PRESSURE ALARMS

30 Pr2

Alarm probe exclusion at power on

Low pressure (temperature) alarm –

10 Pr1

compressor section

High pressure (temperature) alarm–

10 Pr1

compressor section

Low and High pressure (temperature) alarms

10 Pr1

delay– compressor section

2 Pr2

Number of steps engaged with faulty probe

no Pr2

Alarm relay silencing

cL Pr2

Alarm relay output polarity

OTHER

Yes Pr2

Switching ON/OFF enabling from keyboard

1 Pr2

Serial address

- Pr2

Release micro

- Pr2

Parameter table code

Pr1

Password protected menu

1592001620

Range

LSE ÷ HSE

cPr / FAn / StP / ALr / Lin /

nu/Liq/MAn

cPr / FAn / StP / ALr / Lin /

nu/Liq/MAn

cPr / FAn / StP / ALr / Lin /

nu/Liq/MAn

db, pb

no / YES

0.0 bar ÷ PA20

-12.0 ÷ 12.0

oP / cL

0 ÷ 255 min.

oP / cL

> 0 ÷ 10.0 bar

0 ÷ 255 min.

0 ÷ 99.5 min.( res. 10 ")

0 ÷ 99.5 min. (res.10". )

0 ÷ 255 minuti

PA04 ÷ HSE

LSE ÷ PA20

0 ÷ 255 min.

> 0 ÷ 30.0 bar

> 0 ÷ 30.0

0 ÷ 255 min.

0 ÷ oA6

no / YES

oP ÷ cL

no / YES

1 ÷ 247

readable only

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