Evco S.p.A. • Code 104K721E07
EVK721/EVK722 Single output/two outputs digital timers with Real Time Clock version 1.07
GB ENGLISH
1 GETTING STARTED
1.1 Important
Read these instructions carefully before installing and using the instru-
ment and follow all additional information for installation and electrical
connection; keep these instructions close to the instrument for future
consultations.
1.2 Installing the instrument
Panel mounting, with click brackets (supplied by the builder); dimen-
sions in mm (in).
DIMENS. MINIMUM TYPICAL MAXIMUM
A 71.0 (2.795) 71.0 (2.795) 71.8 (2.826)
B 29.0 (1.141) 29.0 (1.141) 29.8 (1.173)
Additional information for installation:
• 59.0 (2.322) is the maximum depth with screw terminal blocks
• 83.0 (3.267) is the maximum depth with extractable terminal blocks
• the panel thickness must not be higher than 8.0 mm (0.314 in)
• working conditions (working temperature, humidity, etc.) must be be-
tween the limits indicated in the technical data
• do not install the instrument close to heating sources (heaters, hot air
ducts, etc.), devices provided with big magnetos (big speakers, etc.),
locations subject to direct sunlight, rain, humidity, dust, mechanical
vibrations or bumps
• according to the safety legislation, the protection against electrical
parts must be ensured by a correct installation of the instrument; the
parts that ensure the protection must be installed so that you can not
remove them if not by using a tool.
1.3 Wiring diagram
With reference to the wiring diagrams:
• the serial port (by request) is the port for the communication with the
supervision system (through a serial interface, via TTL, with MODBUS
communication protocol) or with the programming key; the port must
not be used at the same time for the same purposes.
Additional information for electrical connection:
• do not operate on the terminal blocks with electrical or pneumatic
screwers
• if the instrument has been moved from a cold location to a warm one,
the humidity could condense on the inside; wait about an hour be-
fore supplying it
• test the working power supply voltage, working electrical frequency
and working electrical power of the instrument; they must correspond
with the local power supply
• disconnect the local power supply before servicing the instrument
• do not use the instrument as safety device
• for repairs and information on the instrument please contact Evco
sales network.
2 USER INTERFACE
2.1 Turning on/off the instrument
To turn on the instrument you have to supply it; to turn it off it is enough
to cut off the power supply.
If a lack of power supply arises when the count is running, the opera-
tion of the instrument to the restoration of the power supply will de-
pend on parameter t26.
2.2 Starting the count
• make sure no procedure is running
• provoke the effect you have set with parameter t11:
- if t11 = 0, press or activate input start
- if t11 = 1, press
- if t11 = 2, activate input start.
2.3 Stopping the count
• make sure parameter t17 has value 0
• provoke the effect you have set with parameter t12:
- if t12 = 0, press or activate input stop
- if t12 = 1, press
- if t12 = 2, activate input stop.
Otherwise:
• press 4 s.
2.4 Suspending/resuming the count
To suspend the count:
• make sure parameter t17 has value 2
• provoke the effect you have set with parameter t12:
- if t12 = 0, press or activate input stop
- if t12 = 1, press
- if t12 = 2, activate input stop.
If the count is suspended when load 1 (or load 2) is turned on, the load
status during the suspension will depend on parameter t24 (or t25):
- if t24 (or t25) = 0, the load will be turned off
- if t24 (or t25) = 1, the load will remain turned on.
To resume the count:
• provoke the effect you have set with parameter t11:
- if t11 = 0, press or activate input start
- if t11 = 1, press
- if t11 = 2, activate input start.
2.5 The display
If the count is running, the display will show the kind of count you have
set with parameter t15:
• if t15 = 0, the display will show the remaining time (count down)
• if t15 = 0, the display will show the elapsed time (count up).
If the count is suspended, the display will flash.
2.6 Silencing the buzzer in alarm
• press a button (the first pressure of the button does not provoke its
usual effect).
3 OPERATION
3.1 Preliminary information
The operation mainly depends on the instrument code.
3.2 Operation with instrument code = 1
3.3 Operation with instrument code = 2
If the cyclical operation is not active (parameter t18 = 0), parameter t2
will not be visible.
3.4 Operation with instrument code = 3
To start the count:
• make sure parameter t11 has value 0 or 2
• activate input start.
To stop the count:
• press 4 s.
If the duration of the activation of input start is shorter than the time
you have set with parameter t1, load 1 and the buzzer will not be turned
on.
3.5 Operation with instrument code = 4
During the activation of load 1:
• the display shows “00:00” flashing
• if you try to suspend the count, you will stop it.
3.6 Operation with instrument code = 5 (only EVK722)
If the cyclical operation is not active (parameter t18 = 0), parameter t3
will not be visible.
3.7 Operation with instrument code = 6 (only EVK722)
3.8 Operation with instrument code = 7 (only EVK722)
3.9 Operation with instrument code = 8 (only EVK722)
If the cyclical operation is not active (parameter t18 = 0), parameter t4
will not be visible.
3.10 Operation with instrument code = 9 (only EVK722)
During the activation of load 2:
• the display shows “00:00” flashing
• if you try to suspend the count, you will stop it.
4 REAL TIME
4.1 Setting the real time
To gain access the procedure:
• make sure no count is running and no procedure is running
• press 4 s: the display will show “dEL” and LED will light
• press or : the display will show “rtc”
To modify the real time:
• press : the display will show the real time (hours:minutes)
• press or in 15 s.
• press or do not operate 15 s: the instrument will quit the proce-
dure.
To quit the procedure early:
• do not operate 15 s.
5 PROGRAMMED START OF THE COUNT
5.1 Setting the time and the day of start of the count
To gain access the procedure:
• make sure no count is running and no procedure is running
• press 4 s: the display will show “dEL” and LED will light
To modify the time of start:
• press : the display will sow the time of start (hours:minutes)
• press or in 15 s.
To modify the number of days for which put back the start:
• press in 15 s: the display will show “Int”
• press : the display will show the number of days
• press or in 15 s (the number of days can be set between
0 and 6)
• press : the instrument will quit the procedure.
To quit the procedure early:
• do not operate 15 s.
Additional information on the function:
• setting the number of days for which put back the start (examples):
if it is 08:00, set 0 as number of days to start the count at 20:00 of the
same day; if it is 20:00, set 1 as number of days to start the count at
08:00 of the following day.
• the function allows to start a count at a time
• if to the time for which the start of the count is programmed another
count is running, the programmed one will not be started
• if to the time for which the start of the count is programmed the
power supply is absent, the count will be started as soon as the power
supply will be restored, except if to the restoration of the power sup-
ply a clock error (code “rtc”) arises
• if a clock error (code “rtc”) is running, the function cannot be acti-
vated
• if a clock error (code “rtc”) arises when the function is active, it will be
interrupted.
5.2 Activating the function
• make sure no count is running and no procedure is running
• press and 1 s: LED will flash.
5.3 Interrupting the function
• make sure no count is running and no procedure is running
• press and 1 s.
6 OTHER SETTINGS
6.1 Setting the instrument code
To gain access the procedure:
• make sure no count is running and no procedure is running
• press and 4 s: the display will show “PA”
• press
• press or in 15 s to set “743”
• press or do not operate 15 s
• press and 4 s: the display will show “dEF”
• press
• press or in 15 s to set “149”
• press or do not operate 15 s: the display will show “CFG”.
To modify the instrument code:
• press
• press or in 15 s
• press or do not operate 15 s: the display will show “CFG” flash-
ing 4 s, after which the instrument will quit the procedure
• switch off/on the power supply of the instrument.
To quit the procedure early:
• press and 4 s or do not operate 60 s.
The modification of the instrument code provokes the res-
toration of the default value of configuration parameters;
to modify the instrument code provoking only the cancel-
lation of the value of parameters t1, t2, t3, t4 and t19,
modify parameter CFG with the procedure related in para-
graph 6.2.
6.2 Setting configuration parameters
Configuration parameters are arranged on two levels.
To gain access the first level:
• make sure no count is running and no procedure is running
• press and 4 s: the display will show “PA”
To select a parameter:
• press or
To modify a parameter:
• press
• press or in 15
• press or do not operate 15 s.
To gain access the second level:
• gain access the first level
• press or to select “PA”
• press
• press or in 15 s to set “-19”
• press or do not operate 15 s
• press and 4 s: the display will show “t1”.
To quit the procedure:
• press and 4 s or do not operate 60 s.
Switch off/on the power supply of the instrument after the
modification of the parameters.
6.3 Setting parameters t1, t2, t3 and t4 quickly
To modify parameter t1:
• make sure no count is running and no procedure is running
• press : LED will flash
• press or in 15 s; also look at parameter t20.
To modify parameter t2 (if provided):
• press in 15 s: LED will flash
• press or in 15 s; also look at parameter t21.
To modify parameter t3 (if provided):
• press in 15 s: LED will flash
• press or in 15 s; also look at parameter t22.
To modify parameter t4 (if provided):
• press in 15 s: LED will flash
• press or in 15 s; also look at parameter t23
• press or do not operate 15 s: the instrument will quit the proce-
dure.
To quit the procedure early:
• do not operate 15 s.
7 SIGNALS
7.1 Signals
LED MEANING
out 1 LED load 1
if it is lit, load 1 will be turned on
out 2 LED load 2 (only EVK722)
if it is lit, load 2 will be turned on
LED time t1
if it is lit, the count of the time you have set with parameter
t1 will be running
if it flashes, the modification of parameter t1 will be running
(with the procedure indicated in paragraph 6.3)
LED time t2
if it is lit, the count of the time you have set with parameter
t2 will be running
if it flashes, the modification of parameter t2 will be running
(with the procedure indicated in paragraph 6.3)
LED time t3
if it is lit, the count of the time you have set with parameter
t3 will be running
if it flashes, the modification of parameter t3 will be running
(with the procedure indicated in paragraph 6.3)
LED time t4
if it is lit, the count of the time you have set with parameter
t4 will be running
if it flashes, the modification of parameter t4 will be running
(with the procedure indicated in paragraph 6.3)
h:m LED hours:minutes
if it is lit, the times base of the count that will be running will
be hours:minutes
m:s LED minutes:seconds
if it is lit, the times base of the count that will be running will
be minutes:seconds
LED clock
if it is lit, the modification of the real time or the modification
of the time and the day of start of the count will be running
if it flashes, the function of programmed start of the count
will be active
8 ALARMS
8.1 Alarms
CODE MEANING
display Lack of power supply during the count
flashing Remedies:
• check the reasons that have provoked the lack of power
supply
Effects:
• the effect you have set with parameter t26
9 INTERNAL DIAGNOSTICS
9.1 Internal diagnostics
CODE MEANING
rtc Clock error
Remedies:
• set the real time again
Effects:
• the function of programmed start of the count cannot be
activated
• if the function of programmed start of the count is active,
it will be interrupted
10 TECHNICAL DATA
10.1 Technical data
Box: self-extinguishing grey.
Frontal protection: IP 65.
Connections (use copper conductors only): screw terminal blocks
(power supply, inputs and outputs), 6 poles connector (serial port; by
request); extractable terminal blocks (power supply, inputs and outputs)
by request.
Working temperature: from 0 to 55 °C (32 to 131 °F, 10 ... 90% of
relative humidity without condensate).
Power supply: 230 VAC, 50/60 Hz, 3 VA (approximate); 115 VAC or
12-24 VAC/DC or 12 VAC/DC by request.
Clase de aislamiento: 2.
Real time maintenance in absence of power supply: 24 h, on
condition that the instrument has remained turned on 2 min at least.
Alarm buzzer: incorporated.
Digital inputs: 2 (start and stop) for NO/NC contact (free of voltage,
5 V 1 mA).
Working range: from 1 ds to 99 h and 59 min.
Digital outputs EVK721: 1 relay:
• load 1 relay: 8 res. A @ 250 VAC,
2 FLA, 12 LRA (change-over contact).
Digital outputs EVK722: 2 relays:
• load 1 relay: 8 res. A @ 250 VAC,
2 FLA, 12 LRA (change-over contact)
• load 2 relay: 8 res. A @ 250 VAC,
2 FLA, 12 LRA (change-over contact).
The maximum current allowed on load 1 is 10 A.
Serial port: port for the communication with the supervision system
(through a serial interface, via TTL, with MODBUS communication pro-
tocol) or with the programming key; by request.
11 CONFIGURATION PARAMETERS
11.1 First level configuration parameters
PARAM. MIN. MAX. U.M. DEF. TIMER
t1 00:00 (1) (2) 00:00 duration time t1
t2 00:00 (1) (3) 00:00 duration time t2 (not visible if instrument code = 3 or 4)
t3 00:00 (1) (4) 00:00 duration time t3 (not visible if instrument code = 1, 2, 3 or 4)
t4 00:00 (1) (5) 00:00 duration time t4 (visible if instrument code = 7 or 8)
t5 00:00 99:59 min:s 00:05 duration of the activation of the buzzer (not visible if instrument code = 4 or 9)
t6 00:00 99:59 min:s 00:00 time between the activation of the buzzer and the shutdown of the last load (not visible if instrument
code = 3, 4 or 9)
t7 0 2 - - - 1 times base time t1 (6)
0 = s:ds
1 = min:s
2 = h:min
t8 0 2 - - - 1 times base time t2 (not visible if instrument code = 3 or 4) (6)
0 = s:ds
1 = min:s
2 = h:min
t9 0 2 - - - 1 times base time t3 (not visible if instrument code = 1, 2, 3 or 4) (6)
0 = s:ds
1 = min:s
2 = h:min
t10 0 2 - - - 1 times base time t4 (visible if instrument code = 7 or 8) (6)
0 = s:ds
1 = min:s
2 = h:min
t19 00:00 (1) (7) 00:00 time between the activation of load 2 and the shutdown of load 1 (visible if instrument code = 5 or 6)
11.2 Second level configuration parameters
PARAM. MIN. MAX. U.M. DEF. TIMER
t1 00:00 (1) (2) 00:00 duration time t1
t2 00:00 (1) (3) 00:00 duration time t2 (not visible if instrument code = 3 or 4)
t3 00:00 (1) (4) 00:00 duration time t3 (not visible if instrument code = 1, 2, 3 or 4)
t4 00:00 (1) (5) 00:00 duration time t4 (visible if instrument code = 7 or 8)
t5 00:00 99:59 min:s 00:05 duration of the activation of the buzzer (not visible if instrument code = 4 or 9)
t6 00:00 99:59 min:s 00:00 time between the activation of the buzzer and the shutdown of the last load (not visible if instrument
code = 3, 4 or 9)
t7 0 2 - - - 1 times base time t1 (6)
0 = s:ds
1 = min:s
2 = h:min
t8 0 2 - - - 1 times base time t2 (not visible if instrument code = 3 or 4) (6)
0 = s:ds
1 = min:s
2 = h:min
t9 0 2 - - - 1 times base time t3 (not visible if instrument code = 1, 2, 3 or 4) (6)
0 = s:ds
1 = min:s
2 = h:min
t10 0 2 - - - 1 times base time t4 (visible if instrument code = 7 or 8) (6)
0 = s:ds
1 = min:s
2 = h:min
t11 0 2 - - - 0 event provoking the start of the count (not visible if instrument code = 3)
0 = pressure of button or activation of input start
1 = pressure of button
2 = activation of input start
t12 0 2 - - - 0 event provoking the stop of the count (not visible if instrument code = 3) (8)
0 = pressure of button or activation of input stop
1 = pressure of button
2 = activation of input stop
t13 0 1 - - - 0 kind of contact input start
0 = NO (the input will be active if you close the contact)
1 = NC (the input will be active if you open the contact)
t14 0 1 - - - 0 kind of contact input stop (not visible if instrument code = 3)
0 = NO (the input will be active if you close the contact)
1 = NC (the input will be active if you open the contact)
t15 0 1 - - - 0 kind of count
0 = remaining time (count down)
1 = elapsed time (count up)
t16 0 3 - - - 0 display colour
0=green
1=red
2 = green when the loads will be turned off and red when the loads will be turned on
3 = red when the loads will be turned off and green when the loads will be turned on
t17 0 2 - - - 0 action provoked by the events you have set with parameters t11 and t12 when the count is running
(not visible if instrument code = 3)
0 = the event you have set with parameter t12 will stop the count and the event you have set with
parameter t11 will start it again from the beginning
1 = the event you have set with parameter t12 will suspend the count and the event you have set with
parameter t11 will start it again from the beginning
2 = the event you have set with parameter t12 will suspend the count and the event you have set with
parameter t11 will resume it
t18 0 1 - - - 0 cyclical operation (visible if instrument code = 2, 5 or 8)
1 = YES
t19 00:00 (1) (7) 00:00 time between the activation of load 2 and the shutdown of load 1 (visible if instrument code = 5 or 6)
t20 0 1 - - - 0 locking the modification of parameter t1 (with the procedure related in paragraph 6.3)
1 = YES
t21 0 1 - - - 0 locking the modification of parameter t2 (with the procedure related in paragraph 6.3; not visible if
instrument code = 3 or 4)
1 = YES
t22 0 1 - - - 0 locking the modification of parameter t3 (with the procedure related in paragraph 6.3; not visible if
instrument code = 1, 2, 3 or 4)
1 = YES
t23 0 1 - - - 0 locking the modification of parameter t4 (with the procedure related in paragraph 6.3; visible if instru-
ment code = 7 or 8)
1 = YES
t24 0 1 - - - 1 load 1 status during a suspension of the count that happens when the load is turned on (not visible if
instrument code = 3 or 4)
0 = turned off
1 = tuned on
t25 0 1 - - - 1 load 2 status during a suspension of the count that happens when the load is turned on (not visible if
instrument code = 1, 2, 3, 4 or 9)
0 = turned off
1 = tuned on
t26 0 3 - - - 0 operation of the instrument to the restoration of the power supply after a lack that arises when the
count is running
0 = the count will be stopped
1 = the count will be stopped, the display will flash and the buzzer will be activated intermittent (this last
the time t27)
2 = the count will be started again since the beginning of the time during which the lack of power
supply will have arisen, the display will flash and the buzzer will be activated intermittent (this last
the time t27) (9)
3 = the count will be resumed since the moment in which the lack of power supply will have arisen
(with a maximum error of 60 s), the display will flash and the buzzer will be activated intermittent
(this last the time t27) (9) (10)
t27 00:00 15:00 min:s - -:- - time the buzzer is activated (intermittent) to the restoration of the power supply after a lack that arises
when the count is running
- - : - - = as long as it is silenced by hand
PARAM. MIN. MAX. U.M. DEF. SERIAL NETWORK (MODBUS)
LA 1 247 - - - 247 instrument address
Lb 0 3 - - - 2 baud rate
0 = 2,400 baud
1 = 4,800 baud
2 = 9,600 baud
3 = 19,200 baud
LP 0 2 - - - 2 parity
0 = none
1 = odd
2 = even
PARAM. MIN. MAX. U.M. DEF. RESERVED
E9 0 1 - - - 1 reserved
PARAM. MIN. MAX. U.M. DEF. INSTRUMENT CODE
CFG 1 (11) - - - (12) instrument code (13)
(1) the value depends on the times base (parameters t7, t8, t9 and t10):
TIMES BASE
s:ds
min:s
h:min
VALUE
99:90
99:59
99:59
(2) the unit of measure depends on parameter t7
(3) the unit of measure depends on parameter t8
(4) the unit of measure depends on parameter t9
(5) the unit of measure depends on parameter t10
(6) the modification of the parameter provokes the cancellation of the value of the corresponding time
(7) if the instrument code has value 5, the unit of measure will depend on parameter t7; if the instrument code has value 6, the unit of measure
will depend on parameter t8
(8) pressure of button 4 s provokes however the stop of the count
(9) if the lack arises during a suspension of the count, to the restoration of the power supply the count will be suspended to the moment in
which the lack of power supply will have arisen
(10) only if the times base of the time during which the lack of power supply has arisen is mn:s or h:min, otherwise the instrument will work as
if parameter t26 had value 2
(11) the value depends on the kind of instrument (4 for EVK721 and 9 for EVK722)
(12) the value depends on the kind of instrument (1 for EVK721 and 5 for EVK722)
(13) the modification of the parameter provokes the cancellation of the value of parameters t1, t2, t3, t4 and t19; to restore the default value of
the parameters, look at paragraph 6.1.
The instrument must be disposed according to the local legislation about the collection for electrical and electronic equipment.
EVCO S.p.A. This document belongs to Evco; unless you are authorized by Evco, you can not publish it.
Via Mezzaterra 6, 32036 Sedico Belluno ITALY Evco does not take any responsibility about features, technical data and possible mistakes related in this document or coming by its use.
Phone +39-0437-852468 • Fax +39-0437-83648 Evco does not take any responsibility about damages coming by the non-observance of the additional information.
PT • 45/10
info@evco.it • www.evco.it Evco reserves the right to make any change without prior notice and at any time without prejudice the basic safety and operating features.
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