Configurability, Signals and alarms, Technical da – EVCO EC3120 User Manual

Page 2: How to order

To modify the parameter value keep pushed the key T3 (the instrument displays the actual

value) and at the same time push and release over and over the key T1 or T2 as long as the

instrument displays the desired value (keeping pushed the key T1 or T2 the value gets de-

creased or increased more quickly); after the modification release the key T3 last (to the

release of the key T3 the instrument displays the label of the parameter again).
To gain access to the second level enter inside the first level and select the label PA.
Keep pushed the key T3 (the instrument displays the actual value) and at the same time push

and release over and over the key T1 or T2 as long as the instrument displays -19 (keeping

pushed the key T1 or T2 the value gets decreased or increased more quickly): after the modi-

fication release the key T3 last (to the release of the key T3 the instrument displays the label PA

again); keep pushed at the same time for four seconds at least the keys T1 and T2 (passed four

seconds the instrument displays the first parameter of the second level).
To select a parameter of the second level push and release over and over the key T1 or T2 as

long as the instrument displays the label of the desired parameter.
To modify the parameter value keep pushed the key T3 (the instrument displays the actual

value) and at the same time push and release over and over the key T1 or T2 as long as the

instrument displays the desired value (keeping pushed the key T1 or T2 the value gets de-

creased or increased more quickly); after the modification release the key T3 last (to the

release of the key T3 the instrument displays the label of the parameter again).
To turn out from the configuration parameters setting procedure keep pushed at the same time

for four seconds at least the keys T1 and T2 or do not operate with the keys for fifty seconds at

least (time-out exit).
ADDITIONAL INFORMATIONS
-

for the whole period of a corrupted memory data alarm the access to the configu-

ration parameters setting procedure is refused

the modification of a parameter value which unit of measure is the hour or the

minute or the second has not immediate effect; to obtain this effect it must not be

executed during the course of the value

the configuration parameters values get stored in a non volatile memory even if a

lack of power supply happens.

CONFIGURABILITY

WORKING SETPOINT
LABELMIN. MAX. U.M. ST.

WORKING SETPOINT

working setpoint

It establishes the temperature associated to the output K 1.
CONFIGURATION PARAMETERS
LABELMIN. MAX. U.M. ST.

PASSWORD

-55

---

password (§)

It is the password that permits to gain access to the second level.
LABEL MIN. MAX. U.M. ST.

MEASURE INPUT

---

kind of probe

It establishes the kind of probe that the instrument must recognize to its measure input, as

indicated:

1 =

PTC probe

2 =

reserved

3 =

NTC probe

4 =

reserved.

-55

+99 °C/8 0

calibration

It establishes a threshold to add algebraically to the signal coming from the measure input (for

instance to correct the signal).
/2

---

digital filter

It establishes a time constant to apply to the signal coming from the measure input, as indi-

cated:

0 =

0 sec.

1 =

0.4 sec.

2 =

1.2 sec.

3 =

3.0 sec.

4 =

8.0 sec.

5 =

19.8 sec.

6 =

48.0 sec.

---

reserved

Reserved.
LABELMIN. MAX. U.M. ST.

ON-OFF TEMPERATURE REGULATOR ASSOCIATED TO

THE WORKING SETPOINT AND TO THE OUTPUT K 1

+15 °C

hysteresis (differential) (§)

It establishes the hysteresis (differential) relative to the working setpoint.
r1

-55

+99 °C

-50

minimum working setpoint programmable

It establishes the minimum working setpoint programmable; the instrument automatically veri-

fies if the value established with the parameter r1 is below the maximum working setpoint

programmable established with the parameter r2.
r2

-55

+99 °C

+50 maximum working setpoint programmable

It establishes the maximum working setpoint programmable; the instrument automatically

verifies if the value established with the parameter r2 is above the minimum working setpoint

programmable established with the parameter r1.
LABEL MIN. MAX. U.M. ST.

OUTPUT K 1 PROTECTION

min. 0

disabling time to the output activation from the instru-

ment start

It establishes the time that disables the output activation from the moment of the instrument

start.
C1

min. 5

disabling time to the output activation from the previous

activation

It establishes the time that disables the output activation from the moment of the previous

output activation.
C2

min. 3

disabling time to the output activation from the previous

deactivation

It establishes the time that disables the output activation from the moment of the previous

output deactivation.
C3

---

output status during a cabinet probe failure alarm

It establishes the status to which the output gets forced during a cabinet probe failure alarm,

as indicated:

0 =

during a cabinet probe failure alarm the output gets forced to the status OFF

1 =

during a cabinet probe failure alarm the output gets forced to the status ON.

---

disabling time to the output activation and deactivation

It establishes if to disable the output activation and deactivation for a fixed time, as indicated:

0 =

inactive

1 =

the output activation and deactivation get disabled for 3 sec.

LABEL MIN. MAX. U.M. ST.

DEFROST REGULATOR

(*)

defrost interval

It establishes the time interval that pass from the moment of the instrument start or from the

moment in which the instrument activates a defrost to the moment in which the instrument

automatically activates the following defrost.
If the parameter d0 has value 0 the instrument never automatically activates a defrost, except

what established with the parameter d4.
d3

(*)

defrost length

It establishes the defrost length.
d4

---

defrost at the instrument start

It establishes if the instrument automatically must activate a defrost at the moment of the

instrument start, as indicated:

0 =

inactive

1 =

the instrument automatically activates a defrost at the moment of the instrument start.

(*)

delay to a defrost activation from the instrument start

If the parameter d4 has value 0 it establishes a time interval to add to the interval established

with the parameter d0; the value so obtained establishes the time interval that pass from the

moment of the instrument start to the moment in which the instrument automatically activates

the following defrost.
If the parameter d4 has value 1 it establishes the delay with which the instrument automatically

activates a defrost from the moment of the instrument start.
A manual activation of a defrost during the count of the delay established with the parameter

d5 clears the delay.
d6

---

locking of the displayed temperature from a defrost acti-

vation

It establishes if to lock the displayed temperature from the moment in which the instrument

activates a defrost, as indicated:

0 =

inactive

1 =

during a defrost and as long as the temperature read by the cabinet probe reaches the

working setpoint, the instrument displays the temperature read by the cabinet probe in

the moment in which the instrument activates a defrost.

hours 1

disabling time to the temperature alarm activation from

the defrost end

It is significant exclusively if the parameter db has value 0, it establishes the time that disables

the temperature alarm activation from the moment of the defrost end.
db

---

times base for the parameters d0, d3 and d5

It establishes the unit of measure of the parameters d0, d3 and d5, as indicated:

0 =

the unit of measure of the parameter d0 is the hour and the unit of measure of the

parameters d3 and d5 is the minute

1 =

the unit of measure of the parameter d0 is the minute and the unit of measure of the

parameters d3 and d5 is the second.

LABEL MIN. MAX. U.M. ST.

TEMPERATURE ALARM REGULATOR

+15 °C

hysteresis (differential)

It establishes the hysteresis (differential) relative to the parameters A1 and A2.
A1

-55

-10

lower alarm set relative to the working setpoint

It establishes a threshold to add algebraically to the working setpoint; the value so obtained

establishes the temperature below which the lower temperature alarm gets activated.
If the parameter A1 has value 0 the lower temperature alarm never gets activated.
A2

+99 °C

+10 upper alarm set relative to the working setpoint

It establishes a threshold to add algebraically to the working setpoint; the value so obtained

establishes the temperature above which the upper temperature alarm gets activated.
If the parameter A2 has value 0 the upper temperature alarm never gets activated.
A3

hours 2

disabling time to the alarm activation from the instru-

ment start

It establishes the time that disables the temperature alarm activation from the moment of the

instrument start.
A4

---

reserved

Reserved.
LABEL MIN. MAX. U.M. ST.

CONNECTION IN A SERIAL NETWORK WITH EVCOBUS

PROTOCOL COMMUNICATION

---

reserved

Reserved.
L1

---

instrument address

It establishes the address to which the instrument (slave) answers when it is connected to a

serial network with EVCOBUS protocol communication managed from a master (for instance a

Personal Computer).
ADDITIONAL INFORMATIONS
-

the symbol (§) indicates that the parameter is of the first level

the symbol (*) indicates that the unit of measure depends from the parameter db.

SIGNALS AND ALARMS

SIGNALS
If the LED L1 is turned ON it means that the output K 1 is activated.
If the LED L2 is turned ON it means that a defrost is running.
If the LED L1 flashes it means that a count of a disabling time to the output K 1 activation is

running (see the parameters C0, C1, C2 and C4).

ALARMS
If the instrument displays the indication “E2” flashing and the buzzer utters an intermittent

beep (corrupted memory data alarm) it means that there is a corruption of the configuration

data in the memory (turn OFF and turn ON again the instrument: if to the turning ON again the

alarm does not disappear the instrument must be replaced); during this alarm the access to

the working setpoint setting and the configuration parameters setting procedures is refused

and the output K 1 gets forced to the status OFF.
If the instrument displays the indication “E0” flashing and the buzzer utters an intermittent

beep (cabinet probe failure alarm) it means that: the kind of connected cabinet probe is not

proper (see the parameter /0), the cabinet probe is faulty (verify the cabinet probe integrity),

there is a mistake in the instrument-cabinet probe connection (verify the instrument-cabinet

probe connection integrity), the temperature read by the cabinet probe is outside the limits

permitted by the cabinet probe in use (verify that the temperature near the cabinet probe be

inside the limits permitted by the cabinet probe); during this alarm the output K 1 gets forced

to the status established with the parameter C3, if a defrost is running the defrost ends and the

instrument never activates a defrost.
If the instrument displays the temperature read by the cabinet probe flashing and the buzzer

utters an intermittent beep (temperature alarm) it means that the temperature read by the

cabinet probe is outside the limit established with the parameter A1 or A2 (see the parameters

A0, A1 and A2); inactive.
If the instrument displays the indication “99” flashing (end of scale display) it means that the

temperature read by the cabinet probe is outside the working range permitted by the instru-

ment (verify that the temperature near the cabinet probe be inside the limits permitted by the

instrument); inactive.
ADDITIONAL INFORMATIONS
-

the alarm codes are related in order of precedence

during a defrost the temperature alarm is disabled.

TECHNICAL DA

TECHNICAL DAT

TECHNICAL DATA
Case:

plastic black (PC-ABS), self-extinguishing.

Size:

74 x 32 x 65 mm (2.91 x 1.25 x 2.55 in.).

Installation:

panel mounting, panel cutout 71 x 29 mm (2.79 x 1.14 in.),

with the equipped screw or spring brackets.

Type of protection:

IP 54.

Connections:

screw terminal blocks with pitch 5 mm (0.19 in., power

supply and measure input) and with pitch 10 mm (0.39 in.,

output) for cables up to 2.5 mm² (0.38 in.²), five poles

single line male connector with pitch 5.08 mm (0.2 in.,

serial port).

Ambient temperature:

from 0 to +60 °C (+32 to +140 °F, 10 ... 90 % of not con-

densing relative humidity).

Power supply:

12 Vac/dc or 12-24 Vac/dc, 50/60 Hz, 1.5 VA.

Insulation class:

II.

Alarm buzzer:

incorporated.

Measure inputs:

1 configurable for PTC/NTC probes.

Working range:

from -50 a +99 °C (-58 to +99 °F) for PTC probe, from

-40 to +99 °C (-40 to +99 °F) for NTC probe.

Setting range:

from -55 to +99 °C (-55 to +99 °F).

Resolution:

1 °C (1 °F).

Display:

2-digit display 12.5 mm (0.49 in.) high red LED display

with automatic minus sign, output status indicator, defrost

status indicator.

Outputs:

one change-over contact 8 (3) A @ 250 Vac relay for one

½ HP @ 250 Vac compressor management.

Kind of defrost managed:

by stopping compressor, automatic and manual.

Defrost management:

for interval and length.

Serial port:

TTL with EVCOBUS protocol communication, for the con-

nection to the CLONE configurer/cloner and RICS super-

vision systems.

HOW TO ORDER

CODING SYSTEM
Instrument name:

EC 3-120.

Desired measure input:

P (for PTC/NTC probes).

Desired power supply:

012 (12 Vac/dc)

024 (12-24 Vac/dc).

Options:

custom configuration, presetting to accept at the measure

input Pt 1000 probes, digital input for the remote activa-

tion of a defrost, temperature display in °F, green LED dis-

play, presetting for the connection to remote indicator (the

maximum distance that can be interfaced is 50 m,

164.04 ft.).