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EWPlus 978 - EWKPlus 978
Electronic controllers and keyboards for
refrigeration units
EWPlus 978 - EWKPlus 978
NOTE
When the instrument is powered on it performs a
lamp test, during which time the display and LEDs will
flash for several seconds to check that they all function
correctly.
UP
Press and release
Scroll through menu options
Increase values
Hold down for at least 5 sec
User-configurable function
(see parameter H31)
N-L
Supply voltage 230Va
3-0
N.O. Relay Compressor
3-1
N.O. Relay Defrost2
3-2
N.O. Relay AUX
3-4
N.O. Relay Defrost
3-5
N.C. Relay Defrost
USER INTERFACE
Reduced SET / Economy LED
Permanently on:
Flashing:
Quick flashing:
Off:
Compressor LED
Permanently on:
Flashing:
Off:
Alarms LED
Permanently on:
Flashing:
Off:
°C LED
Permanently on:
Off:
DOWN
Press and release
Scroll through menu options
Decrease values
Hold down for at least 5 sec
User-configurable function
(see parameter H32)
EWPlus 978 CONNECTIONS
EW
978
PLUS
A
C
D
AUX
0
1
2 3
4 5
N
L
H21
H23
H24
H22
EWPlus 978 TERMINALS - AP2
(A -
) - Parameter H21
(C -
) - Parameter H23
AUX
(D -
) - Parameter H24
(B -
) - Parameter H22
Energy Saving active
reduced setpoint active
access to level2 parameters
in all other cases
compressor active
delay, protection or activation
blocked
in all other cases
alarm active
alarm acknowledged
in all other cases
°C setting (dro = 0)
in all other cases
KEYS
STANDBY (ESC)
Press and release
Return to the previous menu level
Confirm parameter value
Hold down for at least 5 sec
User-configurable function
(see parameter H32)
B
8 9 10
Supply
230Va 4.5W
6 7
6-7
Power input 230Va (Supply)
8-10
Probe Pb2
9-10
Probe Pb1
11-10 D.I.1 (H11≠0 and H43=n) or Probe Pb3 (H11=0 and H43=y)
TTL
TTL Input or Digital Input 2 (H12≠0)
NOTE: for relay and power supply capacities, contact the Sales Office.
Fans LED
Permanently on:
fans active
Off:
in all other cases
Defrost LED
Permanently on:
output active
Flashing:
activated manually or from DI
Off:
in all other cases
Aux LED
Permanently on:
Aux output active
Flashing:
Deep cooling Cycle active
Off:
Aux output not active
°F LED
Permanently on:
°F setting (dro =1)
Off:
in all other cases
set
SET (ENTER)
Press and release
Display alarms (if present)
Open Machine Status menu
Hold down for at least 5 sec
Open Programming menu
Confirm commands
11
TTL
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Summary of Contents for Eliwell EWKPlus 978
- Page 1 EWPlus 978 - EWKPlus 978 Electronic controllers and keyboards for refrigeration units USER INTERFACE Reduced SET / Economy LED Fans LED Permanently on: Energy Saving active Permanently on: fans active Flashing: reduced setpoint active Off: in all other cases Quick flashing:...
- Page 2 RESET PROCEDURE EWPlus 978 and EWKPlus 978 instruments can be RESET and the default factory settings restored in a simple and user-friendly way. Simply reload one of the basic applications by following the procedure described in the paragraph "Loading default applications".
- Page 3 NOTE: It is strongly recommended that you switch the device off and on again each time the parameter configuration is changed, in order to prevent malfunctioning of the configuration and/or ongoing timings. EWPlus 978 - EWKPlus 978 3/12...
- Page 4 - E1: if the cold room probe fails (Pb1), the indication “E1” will appear on the display. - E2: if the Evaporator probe fails (Pb2), the indication “E2” will appear on the display. - E3: if the Evaporator 2 probe fails (Pb3), the indication “E3” will appear on the display. EWPlus 978 - EWKPlus 978 4/12...
- Page 5 Reset from maximum temperature alarm condition Temp. ≤ Set + HAL - AFd (HAL > 0) Temp. ≤ HAL - AFd * If LAL is negative, Set + LAL < Set * If HAL is negative, Set + HAL < Set EWPlus 978 - EWKPlus 978 5/12...
- Page 6 EWKPlus 978: 115Va (±10%) 50/60 Hz or 230Va (±10%) 50/60 Hz EWPlus 978: Power consumption: 4,5W max EWKPlus 978 (115Va and 230Va): 4,0W max Digital outputs (relay): refer to the label on the device Fire resistance category: Software class: NOTE: check the power supply rating on the device’s label;...
- Page 7 • Energy Saving • door switch + Energy Saving DESCRIPTION OF EWKPlus 978 FAMILY EWKPlus 978 are versatile keyboards capable of managing power boards from remote. EWKPlus 978 keyboards have: 2 temperature sensors (regulation and evaporator) 1 multifunctional Digital (D.I.1)/Temperature (Pb3) input The second probe can be used to control the defrost cycle and the evaporator fans.
- Page 8 3 = evaporator 1 and evaporator 2 activated alternately Firmware release. Reserved: read-only parameter Parameters tAble. Reserved: read-only parameter Note: ** The “USER” menu parameters also include “PA2” which permits access to the “Installer” menu. EWPlus 978 - EWKPlus 978 8/12...
- Page 9 Duty Cycle Day Duty Cycle Day Duty Cycle Night Duty Cycle Night Duty cycle Day: controlled by means of parameters “Fon” and “FoF”. Duty cycle Night: controlled by means of parameters “Fnn” and “FnF”. EWPlus 978 - EWKPlus 978 9/12...
- Page 10 This sum is used both for the temperature displayed and for regulation. Calibration 3. Positive or negative temperature value added to the value read by Pb3. -12.0...12.0 °C/°F This sum is used both for the temperature displayed and for regulation. EWPlus 978 - EWKPlus 978 10/12...
- Page 11 Reset pressure switch alarms Led ON NOTES: • To modify the status of a given function, press the 'set' key • If the instrument is switched off, the function labels will return to the default status. EWPlus 978 - EWKPlus 978 11/12...
- Page 12 DISCLAIMER This document is the exclusive property of ELIWELL CONTROLS SRL and may not be reproduced or circulated without the express permission of ELIWELL CONTROLS SRL. While all possible care has been taken to ensure the accuracy of this document, ELIWELL CONTROLS SRL cannot accept liability for any damage resulting from its use.
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