Zander Aachen ENS20 Operating Instructions

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Digital Timer/Counter ENS20

Operating Instructions

Correct Use

Features

Function

ENS20 is a compact, in all usual functions and time ranges simply
programmable digital timer/counter. By use of a tight-fitting
keyboard the front of the equipment is protected against splash­water completely. Therefore ENS20 is suitable ideally for the
employment at bakery machines, machine tools, manufacturing
automats etc..

 Front protection IP65
 Simple programming by integrated keyboard
 7 programmable time ranges 0.01 s - 999 h
 All usual functions programmable
 Only 48 x 48 mm front size

Timing begins either with the programmed time value

(preselection) and ends at zero or it begins with zero and

ends at the preselected value. Stop, resetting as well as
adjusting new parameters during the timing operation are
possible.

Keyboard function during timing/counting

The keyboard disabling (LOCK) is activated, if the keys "<"
and "R" are pressed while connecting the supply voltage.
By this the keyboard can be blocked against inadvertent
adjusting in critical applications. Deactivating is effected by
renewed actuation "<" and "R" while switching on the supp-
ly voltage.

Reset functions

By operation of the backspace key "R" or the RESET-input
(1-2) the ENS20 is set to the programmed preselected

value in each operating condition. The RESET signal (1-2)
and "R" - key have priority in relation to the START signal.

ENS20 can be used in numerous modes of operation as
timer or as counter. The different functions are now descri­bed in detail.

Reset on zero or to the preselected
value

Announcement of the preselected
value; timing continues in the back­ground with all switching functions

Programming mode; depending on
function attitudes only possible if no

+

starting signal is acticvated

With power on activate the simultan-

+

eous pressing of these keys the
LOCK function (keyboard disabling)

Errors and technical changes reserved

English translation

Safety
Precautions

 The installation and operation must be carried out by

qualified personnel only,

 who is familiar with the professional handling of machine

equipment,

 who is familiar with the valid rules of industrial safety

and accident prevention,

 who read and understood the operating instructions.
 The safe function of the device during machine operation

cannot be guaranteed in case of wrong connection or
improper operation. This may lead to fatal injuries.

 Pay attention to country specific regulations.
 The electrical installation must be performed after dis-

connecting the device and the machine from the mains
supply.

 The wiring must be carried out according to the instruc-

Non-observance of the instructions above will cause the
loss of warranty.

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany

Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de

tions of this operating manual.

 The person who programs the device must be protected

against electrostatic discharge (ESD protection).

 Opening the device, any manipulation of the device and

the avoidance of the safety facilities are not permitted.

 All relevant safety regulations and standards must be

attended to.

 Non-observance of the safety regulations may cause

death, severe injuries or substantial damage to property.

 Before use, please, read the operating instructions and

keep it in a safe place. Make sure that the operating
instructions are always available for installation, initial
operation and maintenance.

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Digital Timer/Counter ENS20

Operating Instructions

Installation

Electrical
connection

ENS20 is a panel-mounting device for 45 x 45 mm cutout.
The front of the device is water and dust proof.

 A1-A2 are operating voltage connections for AC 230 V,

AC 115 V for DC 24 V.

 If the DC 24 V version is used, a control transformer

according to EN 61558-2-6 or a power supply unit with
electrical isolation from the mains must be connected.

 External fusing of the contacts (6 A slow-blow or 8 A

quick-action) must be provided.

 The line cross section must not exceed 2.5 mm
 If the device does not function after commissioning, it

must be returned to the manufacturer unopened. Ope­ning the device will void the warranty.

2

Errors and technical changes reserved

English translation

A plastic front frame with external dimensions of 55 x 55 mm
is available as an accessory.

A1: Power supply (+24 V at DC-version)
A2 : Power supply (0 V at DC-version)

1: 0 V for ext. connections
2: Reset input
3: Start input
15-16-18: Contact 1
25-26-28: Contakt 2

Programming

The programming mode is activated by simultaneously
pressing of "<" and ">" keys. Note: The LOCK function
must be deactivated.

There are 8 functions (1..8), which are working on in se­quence. The display flashes in the programming mode.

Programming mode; depending on
attitude only possible if no start-signal

+

is turned on, the display flashes, begin­ning with time preselection (function 1)

Attitude of the values, e.g. time presel­ection or time range

" R " and afterwards " > " - key: Storing

of the new value and next function

2x " R " one after the other: Leave the

programming mode and back to the
normal operation

Display

last pro-

grammed

value,

e.g. 472

Function 1:
Timer/counter preselection

Select the time/count-preselection with
the keys "< " and " > ". Single and conti­nuous pressure are possible.

Storing and next function with "R" .

The display shows "r - >":
Next function with key ">", return to the
operating mode with "R" - key.

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E61-282-00

Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany

2

Digital Timer/Counter ENS20

Operating Instructions

Programming

ENS20 as timer (2-0 to 2-6, see function 2)

Timing begins with turning on the starting signal (1-3) and
can be interrupted by this input as desired. The START
input 1-3 can be closed by a cable link. In this case timing
begins directly with switching on the mains voltage. RESET
and START input have an internal noise pulse suppression.
They may be activated by contacts or electronic initiators.

ENS20 as counter (2-7, see function 2)

All functions 3 to 8 also apply to the counter mode. The
clock input is provided at the terminals 3 (+12..24 V) and 1

(0 V). Counting is done by closing an external counting

contact. Also 2- or 3-wire semiconductor outputs of initia­tors can be used. The falling edge is counted.

The following function settings are valid depending on the
value of the function 2 for timer mode (2-0 to 2-6) or

counter mode (2-7).

Display

Function 3:
Timing functions

3– 0 On-delay. Timing begins with applying of

the mains voltage and closing of the
START-contact. After timing the contacts
switch from 15-16 to 15-18 until the arrival
of a resetting signal, at least however for

100 ms.

3 – 1 Impulse-limiting. As On-delay, however

the contacts are switched on with applicati­on of the mains voltage immediately (15-

18) and back to 15-16 after timing.

Errors and technical changes reserved

Display

2 – 0 0.01 - 9.99 s

2 – 1 0.1 - 99.9 s

2 – 2 1 - 999 s

2 – 3 0.1 - 99.9 min

2 – 4 1 - 999 min

2 – 5 0.1 - 99.9 h

2 – 6 1 - 999 h

2—7 Counter mode

Display

Function 5:

Function 2

Timing ranges

Power failure function

5 – 0 Continuation. Timing is continued after

power failure with the value reached last.

5 – 1 Restart. Timing begins after power failure

with zero or with the preselected value

(RESET after power failure).

Display

Function 6:
Enable/disable programming

6 – 0 Programming enabled during timing.

Programming during timing (i.e. the START
signal is turned on) is enabled. Timing is
stopped and continued after the recent
time preselection with the new values.

English translation

3 – 2 Flashing (T1=T2). The ENS20 works after

applying of the mains voltage and closing
of the START contact as symmetrical cyc­ling timer. The cycle starts with output off

(relay switched off). On and off time are

equal.

3 – 3 Flashing (T2=100ms). In this operating

condition the output relay switches periodi­cally for 100ms. The total cycle time is de­termined by the preselected current value.

3 – 4 Signal off-delay. The control is made by

the START contact. The contacts switch on
immediately and after opening the starting
contact timing begins. After timing the
contacts switch back to 15-16. A stop is not
possible here.

3 – 5... Free for customized special functions

Dispaly

Function 4:
Counting direction

4 – 0 upward. Timing/counting begins with zero

and ends with the preselected value. A
RESET signal sets back to zero.

4 – 1 downward. Timing begins with the presel-

ected value and ends with zero. A RESET

signal sets back to the preselected value.

6 – 1 Programming disabled during timing.

The programming mode by "<" and ">" -
keys is not possible during timing (i.e. the
START signal is turned on). Programming
only, if the START input is turned off.

Display

Function 7:
Aux. contact, only version 52311x

7 – 0 Auxiliary contact is immediate contact.

Timer mode: The 2nd contact switches
with applying the START signal .
Counter mode: The 2nd contact switches
on with the first counting pulse.

7 – 1 Auxiliary contact is progammable pre-

contact

The display shows next "Pxx ".

xx is the timer/counter value of the 2nd

contact. Set the value with <, > e.g."P52".
Through this the 2nd contact switches on

52 clocks before reaching the timer/counter

preselection (1st contact). With the value

"P00 " the 2nd contact switches at the

same time as the 1st contact with reaching
the preselection value.

Display

Function 8:
Input frequency

8 – 0 Input frequency at start/count 50 Hz.

8 – 1 Input frequency at start/count 500 Hz.

Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany

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LOCK

Digital Timer/Counter ENS20

Operating Instructions

Maintenance

Techn. Data

The device must be checked once per month for proper
function and for signs of tampering.

Operating voltage DC 24 V, AC 230V / AC 115 V, 50-60 Hz
Residual ripple + / - 10%
Power consumption < 2 VA
LED´s 3 digits, 7 mm red, time up indication
Protection IP65 front
Internal data storage time 10 years
Contacts 2 changeover contacts
Switching capacity AC 250 V, 8 A; DC 24 V, 3 A
Contact life mechanical 2x107 operations
electrical 105 operations
Inputs 2, 3 DC10..30 V or external contact
Time base quartz-stabilized, time tolerance: < 0.1%
Min. power-off time function 5-1:100 ms, function 5-0: 200 ms
Input frequency / counter 50 / 500 Hz programmable
Trigger closing of the contact / falling edge
Time ranges 7 between 0.01 s and 999 h
Temperature range 0°C - +500C
Dielectric strength 4 kV DIN VDE 0110-1:1997-04
Weight approx. 200 g

The device is otherwise maintenance free, provided that it
was installed properly.

Errors and technical changes reserved

English translation

Dimensions

Variants

48 mm without front frame
55 mm with front frame

Order-No. 523110 ENS20 AC230 V, 2 changeover contacts
Order-No. 523111 ENS20 AC115 V, 2 changeover contacts
Order-No. 523112 ENS20 ADC24 V, 2 changeover contacts
Order-No. 583010 Plastic front frame 55 x 55 mm (option)

Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany

L05

E61-282-00

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Digital Timer/Counter ENS20

Operating Instructions

Errors and technical changes reserved

English translation

Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany

L05

E61-282-00

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