Configurability, Signals and alarms, Technical da – EVCO EC3185 User Manual

Page 2: How to order

Advertising

the working setpoint value gets stored in a non volatile memory even if a lack of

power supply happens.

CONFIGURATION PARAMETERS SETTING
Configuration parameters are arranged on two levels, to protect the most tricky settings against

undesirable violations and they are arranged in families that can be recognized through the

initial letter of the label.
To gain access to the first level keep pushed at the same time for four seconds at least the keys

T1 and T2 (passed four seconds the instrument displays the label PA).
To select a parameter of the first 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 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.
LABELMIN. MAX. U.M. ST.

MEASURE INPUTS

---

kind of probe

It establishes the kind of probe that the instrument must recognize to its measure inputs, 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 signals coming from the measure inputs

(for instance to correct the signals).
/2

---

digital filter

It establishes a time constant to apply to the signals coming from the measure inputs, 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 veri-

fies 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 previ-

ous 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.

LABELMIN. 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 presents a request of a defrost cycle to the moment in which

the instrument automatically presents the following request of a defrost cycle.
If the parameter d0 has value 0 the instrument never automatically presents a request of a

defrost cycle, except what established with the parameter d4.
d1

---

kind of defrost

It establishes the kind of defrost that the instrument must manage, as indicated:

0 =

to resistances (electrical)

1 =

to hot gas (reversal of cycle).

-55

+99 °C

defrost stopping setpoint

It establishes the temperature to which a defrost gets stopped and it is referred to the evapora-

tor probe.
d3

(*)

defrost maximum length

It establishes the defrost maximum length.
Passed the defrost maximum length from the moment in which the instrument activates a

defrost cycle, if the temperature read by the evaporator probe is below the setpoint established

with the parameter d2 the defrost ends.
d4

---

defrost cycle at the instrument start

It establishes if the instrument automatically must present a request of a defrost cycle at the

moment of the instrument start, as indicated:

0 =

inactive

1 =

the instrument automatically presents a request of a defrost cycle at the moment of the

instrument start.

(*)

delay to a defrost cycle 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 presents

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

presents a request of a defrost cycle from the moment of the instrument start.
A manual presentation of a request of a defrost cycle during the count of the delay established

with the parameter d5 clears the delay.
d6

---

locking of the displayed temperature from a defrost cy-

cle activation

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

activates a defrost cycle, as indicated:

0 =

inactive

1 =

during a defrost, a dripping 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 cycle.

(*)

dripping length

It establishes the dripping length.
d8

hours 1

disabling time to the temperature alarm activation from

the defrost cycle 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 cycle end.
d9

---

disabling times to the output K 1 activation override

It is significant exclusively if the parameter d1 has value 1, it establishes if to clear the disa-

bling times to the output K 1 activation in the moment in which the instrument presents a

request of a defrost cycle, as indicated:

0 =

inactive

1 =

in the moment in which the instrument presents a request of a defrost cycle the

disabling times to the output K 1 activation get cleared.

---

evaporator probe reading (§)

It permits to display the temperature read by the evaporator probe.
db

---

times base for the parameters d0, d3, d5 and d7

It establishes the unit of measure of the parameters d0, d3, d5 and d7, as indicated:

0 =

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

parameters d3, d5 and d7 is the minute

1 =

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

parameters d3, d5 and d7 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 and it is

referred to the cabinet probe.
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 and it is

referred to the cabinet probe.
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.
LABELMIN. 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 the output K 2 is activated.
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).
If the LED L2 flashes it means that a count of a delay time to a defrost cycle activation is

running (see the parameters C0, C1, C2 and C4) or that a dripping is running (see the param-

eter d7).
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,

the outputs K 1 and K 2 get forced to the status OFF and the output Al gets deactivated.
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 cycle is running the defrost cycle

ends, the instrument never activates a defrost cycle and the output Al gets deactivated.
If the instrument displays the indication “E1” flashing and the buzzer utters an intermittent

beep (evaporator probe failure alarm) it means that there is one of the faults saw in the

previous case but referred to the evaporator probe; during this alarm the defrost ends passed

the defrost maximum length and the output Al gets deactivated.
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); during this alarm the output Al gets deactivated.
ADDITIONAL INFORMATIONS
-

the alarm codes are related in order of precedence

during a defrost cycle 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, inputs and outputs) 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, 50/60 Hz, 1.5 VA.

Insulation class:

II.

Alarm buzzer:

incorporated.

Measure inputs:

2 (cabinet and evaporator probe) configurable for PTC/NTC

probes.

Digital inputs:

1 for the remote presentation of a request of a defrost cy-

cle (5 V, 1 mA) with NO contact.

Working range:

from -50 to +150 °C (-58 to +199 °F) for PTC probe, from

-40 to +110 °C (-40 to +199 °F) for NTC probe.

Setting range:

from -55 to +99 °C (-55 to +99 °F).

Resolution:

1 °C (1 °F).

Display:

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

with automatic minus sign, compressor and defrost out-

put status indicators.

Outputs:

three 8 (3) A @ 250 Vac relays for one ½ HP @ 250 Vac

compressor (NO contact), defrost system (NO contact) and

alarms (change-over contact) management.

Kind of defrost managed:

to resistances (electrical) and to hot gas (reversal of cy-

cle), automatic, manual and remote.

Defrost management:

for interval, stopping temperature and maximum length.

Serial port:

TTL with EVCOBUS protocol communication, for the con-

nection to the CLONE configurer/cloner and RICS supervi-

sion systems.

HOW TO ORDER

CODING SYSTEM
Instrument name:

EC 3-185.

Desired measure input:

P (for PTC/NTC probes).

Desired power supply:

012 (12 Vac/dc).

Options:

custom configuration, presetting to accept at the measure

inputs Pt 1000 probes, temperature display in °F, green

LED display, presetting for the connection to remote indi-

cator (the maximum distance that can be interfaced is

50 m, 164.04 ft.).

Advertising

Popular Brands

Popular manuals