Emerson XM678D Manual Download Page 14

 

 

1592023140 XM678D GB r2.8  01.09.2017.docx 

XM678D  

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15

 

 

 

LABEL 

VALUE 

DESCRIPTION 

RANGE 

NOTES 

 

CoM 

Cur 

Modulating output configuration. 

PM5; PM6; OA7;  

CUr; tEn 

For models with PWM / O.C. output:

  

- PM5 

=

 

PWM 50Hz;  

- PM6 

=

 

PWM 60Hz;  

- OA7

 =

 

two state, it can be used as an open collector output. 

For models with [4 to 20mA] or [0 to 10V] output:

  

- Cur 

=

 

4 to 20mA current output;  

- tEn 

=

 

0 to 10V voltage output. 

 

AOP 

CL 

Alarm relay polarity. 

OP; CL 

CL 

=

 

normally closed;  

OP 

=

 

normally opened. 

 

iAU 

Auxiliary output independent from 
ON/OFF state. 

n; Y 

=

 

if  the  instrument  is  switched  off  also  the  auxiliary  output  is 

switched off;  

=

 

the  auxiliary  output  state  is  unrelated  to  the  ON/OFF  device 

status. 

 

 

 

DIGITAL INPUTS 

 

 

 

i1P 

CL 

Digital input 1 polarity. 

OP; CL 

CL

 = the digital input is activated by closing the contact;  

OP

 = the digital input is activated by opening the contact. 

 

i1F 

dor 

Digital input 1 configuration. 

EAL; bAL; PAL;  

dor; dEF; AUS;  

LiG; OnF; Htr;  

FHU; ES; HdY 

EAL 

=

 

external alarm; 

bAL 

=

 

serious external alarm;  

PAL 

=

 

pressure switch activation; 

dor 

=

 

door open;  

dEF 

=

 

defrost activation; 

AUS 

=

 

auxiliary activation;  

LiG 

=

 

light activation; 

OnF 

=

 

switch on/off the instrument;  

Htr 

=

 

change type of action; 

FHU 

=

 

not used;  

ES 

=

 

activate energy saving; 

HdY 

=

 

activate holiday function. 

 

d1d 

15 

Digital input 1 activation delay. 

0 to 255min 

When 

[i1F 

PAL]

:  time  interval  to  calculate  the  number  of  the 

pressure switch activation.  
When 

[i1F  =  EAL 

or 

bAL] 

(external  alarms): 

d1d 

parameter 

defines the time delay between the detection and the successive 
signaling of the alarm.  
When 

[i1F = dor]

:

 

this is the delay to activate door open alarm. 

 

i2P 

CL 

Digital input 2 polarity. 

OP; CL 

CL 

means the digital input is activated by closing the contact; 

OP

 means the digital input is activated by opening the contact. 

 

i2F 

LiG 

Digital input 2 configuration. 

EAL; bAL; PAL;  

dor; dEF; AUS;  

LiG; OnF; Htr;  

FHU; ES; HdY 

EAL 

=

 

external alarm; 

bAL 

=

 

serious external alarm;  

PAL 

=

 

pressure switch activation; 

dor 

=

 

door open;  

dEF 

=

 

defrost activation; 

AUS 

=

 

auxiliary activation;  

LiG 

=

 

light activation; 

OnF 

=

 

switch on/off the instrument;  

Htr 

=

 

change type of action; 

FHU 

=

 

not used;  

ES 

=

 

activate energy saving; 

HdY 

=

 

activate holiday function. 

 

d2d 

Digital input 2 activation delay. 

0 to 255min 

When 

[i2F 

PAL]

:  time  interval  to  calculate  the  number  of  the 

pressure switch activation.  
When 

[i2F  =  EAL 

or 

bAL] 

(external  alarms): 

d2d 

parameter 

defines the time delay between the detection and the successive 
signaling of the alarm.  
When 

[i2F = dor]

:

 

this is the delay to activate door open alarm. 

 

i3P 

CL 

Digital input 3 polarity. 

OP; CL 

CL 

means the digital input is activated by closing the contact; 

OP

 means the digital input is activated by opening the contact. 

 

i3F 

ES 

Digital input 3 configuration. 

EAL; bAL; PAL;  

dor; dEF; AUS;  

LiG; OnF; Htr;  

FHU; ES; HdY 

EAL 

=

 

external alarm; 

bAL 

=

 

serious external alarm;  

PAL 

=

 

pressure switch activation; 

dor 

=

 

door open;  

dEF 

=

 

defrost activation; 

AUS 

=

 

auxiliary activation;  

LiG 

=

 

light activation; 

OnF 

=

 

switch on/off the instrument;  

Htr 

=

 

change type of action; 

FHU 

=

 

not used;  

ES 

=

 

activate energy saving; 

HdY 

=

 

activate holiday function. 

 

d3d 

Digital input 3 activation delay. 

0 to 255min 

When 

[i3F 

PAL]

:  time  interval  to  calculate  the  number  of  the 

pressure switch activation.  
When 

[i3F  =  EAL 

or 

bAL] 

(external  alarms): 

d3d 

parameter 

defines the time delay between the detection and the successive 
signaling of the alarm.  
When 

[i3F = dor]

:

 

this is the delay to activate door open alarm. 

 

nPS 

15 

Number of pressure switch activations 
before lock. 

0 to 15 

Number of activation of the pressure switch, during the 

d1d, d2d 

and

 d3d

 interval, before signaling the alarm event 

[i1F, i2F or i3F 

=  PAL]

.  If  the 

nPS

  activation  in  the 

d1d,  d2d  or  d3d

  time  is 

reached,  switch  off  and  on  the  instrument  to  restart  normal 
regulation. 

 

OdC 

F-C 

Compressor and fan status when open 
door. 

no; FAn; CPr; F-C 

no 

= normal; 

Fan 

= Fan OFF; 

CPr 

= Compressor OFF;  

F_C 

= both Compressor and Fan OFF. 

 

rrd 

15 

Output restart delay with door open. 

0 to 255min 

The  outputs  stopped  by  the 

OdC

  parameter  can  restart  after 

rrd

 

time. 

 

 

 

ENERGY SAVING 

 

 

 

ESP 

P1 

Energy saving probe selection. 

nP; P1; P2; P3; P4; P6; tEr 

-

 

 

HES 

0.0 

Temperature increasing during Energy 
Saving. 

[-30.0°C to 30.0°C] 

[-54°F to 54°F] 

Sets the increasing value of the set point during the Energy Saving 
cycle. 

 

PEL 

nU 

Energy saving activation when Light 
or/and AUX are switched off. 

nU(0); LIG(1); AUS(2); LEA(3) 

Energy saving enabled when: 

LiG

: light switched off; 

AUS

: AUX switched off; 

LEA

: both light and AUX switched off. 

If 

nU

 then not used function. 

 

 

 

LAN MANAGEMENT 

 

 

 

LMd 

Defrost Synchronization. 

n; Y 

n

 = the section doesn’t send a global defrost command; 

=  the  section  sends  a  command  to  start  defrost  to  other 

controllers. 

 

dEM 

Defrost end Synchronization. 

n; Y 

= the end of the LAN defrosts are independent;  

Y

 = the end of the LAN defrosts are synchronized. 

 

LSP 

LAN set-point Synchronization. 

n; Y 

= the set-point value is modified only in the local section;

 

= the section set-point, when modified, is updated to the same 

value on all the other sections. 

 

LdS 

LAN Display Synchronization 
(temperature sent via LAN). 

n; Y 

n

 = the set-point value is modified only in the local section;

 

Y

  =  the  value  displayed  by  the  section  is  sent  to  all  the  other 

sections. 

Summary of Contents for XM678D

Page 1: ... that permits to be programmed in a simple way The optional direct serial output RS485 ModBUS compatible permits a simple XWEB interfacing RTC is available as options The HOT KEY connector can be used to connect X REP display Depending on the model 4 QUICK REFERENCE GUIDE HOW TO RUN THE SELF ADAPTIVE REGULATION IN 5 STEPS 1 After wiring the XM678D configure the type of valve bipolar or unipolar vi...

Page 2: ... wrong settings tEP Model LSt steps 10 uSt steps 10 CPP mA 10 CHd mA 10 Sr step s tEu bip unip HSF Half full 0 Manual settings Par Par Par Par Par Par Par 1 Danfoss ETS 25 50 7 262 10 10 300 bP FUL 2 Danfoss ETS 100 10 353 10 10 300 bP FUL tEP Model LSt steps 10 uSt steps 10 CPP mA 10 CHd mA 10 Sr step s tEu bip unip HSF Half full 3 Danfoss ETS 250 400 11 381 10 10 300 bP FUL 4 Sporlan SEI 5 to 11...

Page 3: ...the bounds of the pressure transducer or the P5C parameter is wrong Check all these options and eventually change the transducer rPF the remote pressure transducer is on error situation Check the status of the onboard GREEN LED if this LED is OFF the LAN is not working otherwise check the remote transducer LAST CHECKS ABOUT SUPERHEAT On the fast access menu dPP is the value read by the pressure ga...

Page 4: ...ow the air temperature set is sufficient to press and release the SET button the value is displayed for about 60 sec 9 HOW TO PROGRAM THE PARAMETERS PR1 AND PR2 The device provide 2 programming levels Pr1 with direct access and Pr2 protected with a password intended for experts ACCESS to Pr1 Press and hold for about 3 sec to have access to the first programming level Pr1 Select item or Select the ...

Page 5: ...can perform simultaneous defrosts with the possibility to end them in a synchronized way The Adr parameter cannot be duplicated because in this case the defrost cannot be correctly managed BEGIN Press for 3 seconds the rtC or other will be showed The measurement unit blinks Find Adr Press more than once the DOWN arrow to find the Adr parameter the press SET Modify Adr or Set the value of Adr param...

Page 6: ...h racks Sub 5 13 2 GENERAL CONSIDERATIONS The controller is able to regulate the superheat in manual or self adaptive mode according to the value of the parameter AMS autotuing enabling With AMS n the normal SH regulation is performed With AMS y the self adaptive SH regulation is performed 13 3 MANUAL OPERATING MODE AMS NO The temperature and SH regulation can be performed in 2 ways according to t...

Page 7: ... physical probe or virtual probe obtained by a weighted average between two probes following the formula value_for_room_regulation rPA rPE rPb 100 rPE 100 If the temperature increases and reaches set point plus differential the solenoid valve is opened and then it is closed when the temperature reaches the set point value again In case of fault in the thermostat probe the opening and closing time ...

Page 8: ...o that the relay will be ON for AMt minutes and OFF for 60 AMt minutes In case of P4 error or if P4 is absent the output is at AMA value for the AMt time then the output is at 0 value for the time 255 AMt time performing a simple PWM modulation 16 6 AUXILIARY OUTPUT The auxiliary output is switch ON and OFF by means of the corresponding digital input or by pressing and releasing the down arrow key...

Page 9: ...0 during workdays nU not used Format hours 10min resolution 10min Ld2 13 0 Workdays Second defrost start Ld1 to 23h50min 143 nU 144 Ld3 21 0 Workdays Third defrost start Ld2 to 23h50min 143 nU 144 Ld4 nU Workdays Fourth defrost start Ld3 to 23h50min 143 nU 144 Ld5 nU Workdays Fifth defrost start Ld4 to 23h50min 143 nU 144 Ld6 nU Workdays Sixth defrost start Ld5 to 23h50min 143 nU 144 Sd1 6 0 Holid...

Page 10: ...pening valve percentage during hot gas defrost During hot gs defrost there is not SH control MnF 100 Maximum percentage of opening admitted during normal functioning 0 to 100 During regulation it sets the maximum valve opening percentage This value is not used during the SFd phase soft start and during hot gas defrost where the fixed percentace of the valve opening is set by oPd Fot nU Manual open...

Page 11: ... closer of the valve and then will restart working REGULATION SET 5 0 Set point LS US Target set point for temperature regulation HY 2 Differential 0 1 C to 25 5 C 1 F to 45 F If CrE n then HY is the hysteresis for ON OFF thermoregulation If CrE Y or CrE EUP then HY is the proportional band for temperature PI controller On these cases the value should be greater than 5 C int 150 Integral time for ...

Page 12: ...evaporator probe is present idF 6 Defrost interval 0 to 120hours It sets the time interval between the beginning of two defrost cycles EdF in it is the interval between 2 defrost EdF rtC it is the safety interval in case of clock alarm RtC RtF idF 0 the defrost can be activated only manually or through RS485 or from external contact or from LAN MdF 45 Maximum duration for defrost 0 to 255min When ...

Page 13: ... reached and the ALd delay time is expired the LA alarm will be enabled AHY 1 0 Differential for room temperature alarm 0 1 C to 25 5 C 1 F to 45 F Threshold recovery after a temperature alarm ALd 15 Room Temperature alarm delay 0 to 255min Time interval between the detection of an alarm condition and the corresponding alarm signaling dLU 150 High temperature alarm detected by defrost probe dLL 15...

Page 14: ...P CL Digital input 3 polarity OP CL CL means the digital input is activated by closing the contact OP means the digital input is activated by opening the contact i3F ES Digital input 3 configuration EAL bAL PAL dor dEF AUS LiG OnF Htr FHU ES HdY EAL external alarm bAL serious external alarm PAL pressure switch activation dor door open dEF defrost activation AUS auxiliary activation LiG light activ...

Page 15: ...C ntC P1 configuration nP PtC ntC CtC PtM nP not present PtC Ptc ntC ntc CtC ntc US PtM Pt1000 Ot 0 P1 calibration 12 0 C to 12 0 C Allows to adjust possible offset of the thermostat probe P2C ntC P2 configuration nP PtC ntC CtC PtM nP not present PtC Ptc ntC ntc CtC ntc US PtM Pt1000 oE 0 P2 calibration 12 0 C to 12 0 C Allows to adjust possible offset of the evaporator probe P3C nP P3 configurat...

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