Emerson XEV22D Service Manual download pdf (Page 4)

1592025990 XEV22D GB r1.5 14.11.2014.docx XEV22D 4/6

tEP Predefined valve selection: (0 to 14)

MODEL LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)

(step/s)

tEu

(bip/unip)

HSF

(

Half/full)

Danfoss

ETS-25/50

7 262 10 10 300 bP FUL

Danfoss

ETS-100

10 353 10 10 300 bP FUL

Danfoss

ETS-

250/400

11 381 10 10 300 bP FUL

Sporlan

SEI 0.5-11

0 159 16 5 200 bP FUL

Sporlan

SER 1.5-20

0 159 12 5 200 bP FUL

Sporlan

SEI 30

0 319 16 5 200 bP FUL

Sporlan

SER(I)

G,J,K

0 250 12 5 200 bP FUL

Sporlan

SEI 50

0 638 16 5 200 bP FUL

Sporlan

SEH(I) 100

0 638 16 5 200 bP FUL

Sporlan

SEH(I) 175

0 638 16 5 200 bP FUL

Emerson

EX4-EX5-

EX6

5 75 50 10 500 bP FUL

Emerson

EX7

10 160 75 25 500 bP FUL

Emerson

EX8 500

10 260 80 50 500 bP FUL

Emerson

EX3

4 33 0 0 50

uP HAF

Liability Limitation

All the pre-sets have been done according to the documentation available when the

XEV22D has been released, see below reference:

Danfoss:

- DKRCC.PD.VD1.C6.02 / 520H8021 @ Danfoss A/S (AC-MCI / sw), 2014-

Sporlan:

- 92008 / Bulletin 100-20

- RACE Catalogue 100-20-3 EDEV-2/UK - 02/2013

Emerson

- FC-TD/ EX4-8 July 2008

In any case for each valve the only reference is given by the manual released by the

manufacture together with the valve.

Dixell can’t be considered responsible for any change made by the manufacturer and

reported on the manufacturer manual.

Manual valve setting

To set the valve manually, act the according to the following procedure:

a. Set tEP=0

b. Then set following parameters: LSt, USt, Sr, CPP, CHd according to the valve

manual

HFS Kind of motor movement: (HAF; FUL)

 HAF = half step. Use this setting for the unipolar valve.

 FUL = full step. Use this setting for the bipolar valve.

LSt Minimum number of steps: (0 to USt (*10)) it permits to select the minimum number

of steps. At this number of steps the valve should be closed. So it’s necessary the

reading of manufacturer datasheet to set correctly this parameter. It’s the minimum

number of steps to stay in advised range of functioning.

!!!!! WARNING !!!!! after changing this parameter the valve will have to be

reinitialized. The device performs this procedure automatically and restarts its

normal functioning when the programming mode ends.

USt Maximum number of steps: (LSt to 800 (*10)) it permits to select the maximum

number of steps. At this number of steps the valve should be completely opened. Read

the datasheet provided by manufacturer of the valve to set correctly this parameter. It’s

the maximum number of steps to stay in advised range of functioning. !!!!! WARNING

!!!!! after changing this parameter the valve will have to be reinitialized. The

device performs this procedure automatically and restarts its normal functioning

when the programming mode ends.

ESt Extra step in closing phase: (0 to 255 (*10)) it sets the number of extra steps the

controller performs, when the valve is closed at start up, to force the closure of the

valve.

Sr Step rate: (10 to 600 step/sec) it is the maximum speed to change step without losing

precision (=losing steps). It’s advised to stay under the maximum speed.

CPP Current per phase (only bipolar valves): (0 to 100 (*10mA)) it is the maximum current

per phase used to drive valve. It’s used only with bipolar valves.

CHd Holding current per phase (only bipolar valves): (0 to 100 (*10mA)) it is the current

per phase when the valve is stopped for more than 4 minutes. It’s used only with

bipolar valves.

oPE Start opening Percentage: (0 to 100%) opening valve percentage when start function

is active and during post defrost phase. This phase duration is SFd time.

SFd Start Function duration: (0.0 to 42min 00s, res. 10s) it sets start function duration and

post-defrost duration. During this phase the alarms are not enabled.

dty Pilot duty: (2-10dec/sec) To reach the final position the valve moves for Ton sec and

stops for Tof sec, where Ton and Tof are defined as in the following:.

Ton= dty/10s

Toff= (1-dty/10)s

Note: with dty=10 the Pilot duty function is disabled.

With bipolar valve, during the Toff time the maintenance current is used.

MnF Maximum opening percentage at normal Functioning: (0 to 100%) during regulation

it sets the maximum valve opening percentage.

FoP Forced Opening percentage: (0 to 100; nU) if FoP=nU valve works with regulation

algorithm. If FoP is different from nU the valve stays at FoP opening percentage. This

function could be useful during plant starting or during service operations.

PI PARAMETERS (trained staff)

AMS

Self self adaptive SH regulation enabling: parameter enables the self adaptive

regulation of the superheat

no = standard regulation using the PID parameters (Pb, rS, inC, dFC)

yES = self-adaptive regulation, controller regulates SH automatically, setting the PID

parameter

Atu

Minimum STABLE superheat search (No; yES) This parameter enables the search of

the minimum stable superheat. The lowest admitted value is LSH+2°C

Proportional band:

(0.1 to 50.0°C; 1 to 90°F)

PI proportional band. A value

bigger than 5°C is advised.

Band Offset:

(-12.0 to 12.0°C; -21 to 21°F)

PI band offset. It permits to

move the proportional band of

the PI. With rS=0 the band is

between [SEt to SEt+Pb].

inC Integration time: (0 to 255s) PI integration time.

dFc Derivative time (0 to 255s) PID derivative time.

PROBE PARAMETERS

tPP Type of Pressure transducer: (420; 5V; LAn) it sets type of pressure transducer to

use. 420 = 4 to 20mA pressure transducer; 5V = 0 to 5V ratiometric transducer; LAn =

the pressure signal comes from another XEV module.

LPP Enable pressure probe sending in LAN: (n; Y) if LPP=Y the value of pressure read

by device is sent in LAN. Only one device of the LAN can have LPP=Y.

PA4 Probe value at 4mA or at 0V: (-1.0 to P20 bar; -14 to P20 psi) pressure value

measured by probe at 4mA or at 0V (related to PrM parameter).

P20 Probe value at 20mA or at 5V: (PA4 to 50.0 bar; PA4 to 725 psi) pressure value

measured by probe at 20mA or at 5V (related to PrM parameter).

oPr Pressure probe calibration: -12.0 to 12.0 bar; -174 to 174 psi.

ttE Type of temperature probe: (PtM; ntC) it allows to set the kind of probe used by the

instrument: PtM = PT1000 probe, ntC = NTC-US probe.

otE Temperature probe calibration: -12.0 to 12.0°C; -21 to 21°F.

DIGITAL INPUTS

i1P Digital Input 1 (Free of voltage) digital input polarity: (cL, oP) CL = activated when

closed; oP = activated when opened.

i1F Digital Input 1 (Free of voltage) digital input function: (CCL, rL) CCL = cooling call;

rL = digital input activates relay.

d1d Digital Input 1 (Free of voltage) activation delay: (0 to 255 min) this activation delay

is used only if digital input is configured as rL.

i2P Digital Input 2 (High voltage) digital input polarity: (CL, oP) CL = activated when

closed; oP = activated when opened.

i2F Digital Input 2 (High voltage) digital input function: (CCL, rL) CCL = cooling call;

rL = digital input activates relay.

d2d Digital Input 2 (High voltage) activation delay: (0 to 255 min) this activation delay is

used only if digital input is configured as rL.

ALARM

dAo Alarm delay after restarting regulation: (0.0 to 42min 00s, res. 10s) time between

digital input activation (configured as CCL) and alarm signalling. The LSH alarm is

always signalled also during this time.

tdA Type of alarm signalled by relay: (ALL, SH, PrE, di) ALL = all alarm; SH = superheat

alarm; PrE = pressure alarm; di = activation only when digital input configured as rL is

active.

LPL Lower Pressure Limit for superheat regulation: (PA4 to P20 bar; PA4 to P20 psi)

when suction pressure comes down to LPL, the regulation is performed with a LPL

fixed value for pressure. When suction pressure comes back to LPL, the normal

pressure value is used (related to PrM parameter).

MoP Maximum Operating Pressure threshold: (LoP to P20bar; LoP to P20 psi) if suction

pressure exceeds maximum operating pressure value, the instrument signals this

situation with an alarm LED (related to PrM parameter).

LoP Lowest Operating Pressure: (PA4 to MoP bar; PA4 to MoP psi) if the suction pressure

comes down to this value, a low pressure alarm will be signalled with an alarm LED

(related to PrM parameter).

PHY Pressure alarm Hysteresis: (0.1 to 5.0 bar, 1 to 72 psi) pressure hysteresis to disable

alarm signalling.

dML Delta MoP-LoP: (0 to 100%) when a MoP alarm occurs valve will close of the dML

percentage every one second until MoP alarm is active. When LoP occurs, valve will

open of the dML percentage every one second until LoP alarm is active.

MSH Maximum SuperHeat alarm: (LSH to 80.0°C; LSH to 144°F) when superheat exceeds

this value, an high superheat alarm will be signalled after interval SHd.

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