dIXEL XW40L Installing And Operating Instructions - Page 2

Browse online or download pdf Installing And Operating Instructions for Controller dIXEL XW40L. dIXEL XW40L 3 pages. Digital controller for medium-low temperature refrigeration applications

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dIXEL

6.5.2 HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE

FIRST LEVEL AND VICEVERSA.

Each parameter present in the HIDDEN MENU can be removed or put into "THE FIRST LEVEL"

(user level) by pressing "SET + n".

In HIDDEN MENU when a parameter is present in First Level the decimal point is on.

6.6 HOW TO LOCK THE KEYBOARD

Keep pressed for more than 3 s the UP + DOWN keys.

The "POF" message will be displayed and the keyboard will be locked. At this point it will be

possible only to see the set point or the MAX o Min temperature stored

If a key is pressed more than 3s the "POF" message will be displayed.

6.7 TO UNLOCK THE KEYBOARD

Keep pressed together for more than 3s the o and n keys, till the "Pon" message will be

displayed.

6.8 THE CONTINUOUS CYCLE

When defrost is not in progress, it can be activated by holding the "o" key pressed for about 3

seconds. The compressor operates to maintain the "ccS" set point for the time set through the "CCt"

parameter. The cycle can be terminated before the end of the set time using the same activation key

"o" for 3 seconds.

6.9 THE ON/OFF FUNCTION

With "onF = oFF", pushing the ON/OFF key, the instrument is switched off. The "OFF"

message is displayed. In this configuration, the regulation is disabled.

To switch the instrument on, push again the ON/OFF key.

WARNING: Loads connected to the normally closed contacts of the relays are always

supplied and under voltage, even if the instrument is in stand by mode.

7. PARAMETERS

REGULATION

Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point. Compressor Cut IN

is Set Point + differential (Hy). Compressor Cut OUT is when the temperature reaches the set

point.

LS Minimum set point: (- 50°C÷SET/-58°F÷SET): Sets the minimum value for the set point.

US Maximum set point: (SET÷110°C/ SET÷230°F). Set the maximum value for set point.

Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust possible offset of

the thermostat probe.

P2P Evaporator probe presence: n= not present: the defrost stops by time; y= present: the defrost

stops by temperature.

OE Evaporator probe calibration: (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of

the evaporator probe.

OdS Outputs activation delay at start up: (0÷255min) This function is enabled at the initial start up

of the instrument and inhibits any output activation for the period of time set in the parameter.

AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop and the

following restart.

CCt Compressor ON time during continuous cycle: (0.0÷24.0h; res. 10min) Allows to set the

length of the continuous cycle: compressor stays on without interruption for the CCt time. Can be

used, for instance, when the room is filled with new products.

CCS Set point for continuous cycle: (-50÷150°C) it sets the set point used during the continuous

cycle.

COn Compressor ON time with faulty probe: (0÷255 min) time during which the compressor is

active in case of faulty thermostat probe. With COn=0 compressor is always OFF.

COF Compressor OFF time with faulty probe: (0÷255 min) time during which the compressor is

OFF in case of faulty thermostat probe. With COF=0 compressor is always active.

DISPLAY

CF Temperature measurement unit:

measurement unit is changed the SET point and the values of the parameters Hy, LS, US, Ot,

ALU and ALL have to be checked and modified if necessary).

rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.

DEFROST

tdF Defrost type: EL = electrical heater; in = hot gas

dtE Defrost termination temperature: (-50÷50 °C/

-58÷122°F) (Enabled only when EdF=Pb) sets the temperature measured by the evaporator

probe, which causes the end of defrost.

IdF Interval between defrost cycles: (0÷120h) Determines the time interval between the

beginning of two defrost cycles.

MdF (Maximum) length for defrost: (0÷255min) When P2P = n, (not evaporator probe: timed

defrost) it sets the defrost duration, when P2P = y (defrost end based on temperature) it sets

the maximum length for defrost.

dFd Temperature displayed during defrost: (rt = real temperature; it = temperature at defrost

start; SEt = set point; dEF = "dEF" label)

dAd MAX display delay after defrost: (0÷255min). Sets the maximum time between the end of

defrost and the restarting of the real room temperature display.

Fdt Drip time: (0÷120 min) time interval between reaching defrost termination temperature and the

restoring of the control's normal operation. This time allows the evaporator to eliminate water

drops that might have formed due to defrost.

dPo First defrost after start-up: (y = immediately; n = after the IdF time)

dAF Defrost delay after continuous cycle: (0÷23.5h) time interval between the end of the fast

freezing cycle and the following defrost related to it.

ALARMS

ALC Temperature alarms configuration: (Ab; rE)

Ab= absolute temperature: alarm temperature is given by the ALL or ALU values. rE =

temperature alarms are referred to the set point. Temperature alarm is enabled when the

temperature exceeds the "SET+ALU" or "SET-ALL" values.

ALU MAXIMUM temperature alarm: (SET÷110°C; SET÷230°F) when this temperature is reached

the alarm is enabled, after the "ALd" delay time.

1598029050 XW40L NFR GB r1.0 11.07.2008.doc

Installing and Operating Instructions

°C=Celsius; °F=Fahrenheit. WARNING: When the

ALL Minimum temperature alarm: (-50.0 ÷ SET °C; -58÷230°F when this temperature is reached

the alarm is enabled, after the "ALd" delay time.

ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an alarm

condition and alarm signalling.

dAO Exclusion of temperature alarm at start-up: (from 0.0 min to 23.5h) time interval between the

detection of the temperature alarm condition after instrument power on and alarm signalling.

OTHER

Adr Serial address (1÷244): Identifies the instrument address when connected to a ModBUS

compatible monitoring system.

rEL Software release for internal use.

Ptb Parameter table code: readable only.

8. TTL SERIAL LINE – FOR MONITORING SYSTEMS

The TTL serial line, available through the HOT KEY connector, allows by means of the external

TTL/RS485 converter, XJ485-CX, to connect the instrument to a monitoring system ModBUS-RTU

compatible such as the X-WEB500/3000/300.

9. X-REP OUTPUT – OPTIONAL

As optional, an X-REP can be connected to the instrument, trough the dedicated

connector.

10. INSTALLATION AND MOUNTING

The controller XW40L, shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two

screws

∅

3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-

L). The temperature range allowed for correct operation is 0 - 60 °C. Avoid places subject to strong

vibrations, corrosive gases, excessive dirt or humidity. The same recommendations apply to probes.

Let the air circulate by the cooling holes.

10.1 CUT OUT

10.2 STEEL FINISHING MOUNTING

11. ELECTRICAL CONNECTIONS

The instruments are provided with screw terminal block to connect cables with a cross section up to

2,5 mm

for the digital and analogue inputs. Relays and power supply have a Faston connection

(6,3mm). Heat-resistant cables have to be used. Before connecting cables make sure the power

supply complies with the instrument's requirements. Separate the probe cables from the power

supply cables, from the outputs and the power connections. Do not exceed the maximum current

allowed on each relay, in case of heavier loads use a suitable external relay.

N.B. Maximum current allowed for all the loads is 20A.

11.1 PROBE CONNECTION

The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid

infiltration. It is recommended to place the thermostat probe away from air streams to correctly

measure the average room temperature. Place the defrost termination probe among the evaporator

fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during

defrost, to prevent premature defrost termination.

XW40L

To connect the X-REP to the

instrument the following

connectors must be used

CAB/REP1(1m), CAB/REP2

(2m), CAB/REP5 (5m),

1598029050

RG-LX gascke

(optional)

2/3