Electronic
Mat. no.: 669740
Edition: 12.07.2007
Level Switch
ENS 3000
Contents
Page
E
1. Functions of the ENS 3000 3
2. Installation 3
3. Commissioning 5
4. Operating controls of the ENS 3000 6
5. Digital display 6
6. Output signals
6.1. SWITCHING OUTPUTS 8
6.1.1 Switching point (SP) mode 8
6.1.2 Window (WIN) mode 8
6.2. ANALOGUE OUTPUT 9
6.3. SETTING THE SWITCHING POINTS AND
HYSTERESES OR SWITCHING RANGES FOR THE
WINDOW MODE 9
6.4.
6.5. SETTING RANGES FOR THE OFFSET 12
SETTING RANGES FOR
SWITCHING OUTPUTS 11
7. Basic settings
7.1. ALTERING THE BASIC SETTINGS 13
7.2. SUMMARY OF THE BASIC SETTINGS 14
8. Re-setting the peak values 17
9. Programming enable
9.1.
9.2.
ALTERING THE OPERATING
PROGRAMMING ENABLE
ALTERING THE MAIN
PROGRAMMING ENABLE 18
17
10. Error messages 19
11. Pin connection
11.1. PIN CONNECTION WITH 1 OR 2 SWITCHING
POINTS
11.2. PIN CONNECTION WITH 4 SWITCHING POINTS 21
21
12. Technical specifications
12.1.
12.2. ENS 3000 WITH TEMPERATURE SENSOR 53
ENS 3000 WITHOUT
TEMPERATURE SENSOR
22
13. Ordering information 54
14. Accessories
14.1. ELECTRICAL CONNECTION 25
14.2. MECHANICAL CONNECTION 27
2
15. Dimensions 28
16. Application examples 29
1. Functions of the ENS 3000
The unit has the following functions, depending on the model:
•
Display of the actual fluid level in
•
Display of the actual temperature in
•
Display of the lowest and peak value of the fluid level or temperature or of a
pre-set switching point.
•
Switching of the switching outputs according to the fluid level or temperature
and the pre-set switching parameters.
•
Analogue output.
•
Menu for basic settings (adapting the ENS 3000 to the particular application).
•
Two different types of programming enable.
inch
°F
cm
or
or °C.
(depending on version).
2. Installation
The electronic level switch ENS 3000 should be fastened at the metal collar of
the adaptor using a mounting device which grips as much of the metal collar as
possible. Any device large enough to hold a metal collar of 0.866 inch diameter
can be used. We recommend a bulkhead coupling with an integral cutting ring.
In order to use the full measuring range the active zone of the probe must
extend down into the tank and must be clear of the tank walls.
If the active zone of the probe extends above the top edge of the metallic tank,
then the useable measuring zone of the ENS 3000 is reduced. The function is
not normally impaired.
E
Use HYDAC ELECTRONIC installation accessories for secure and simple
fitting.
Warning:
The ENS 3000 electronic level switch is not suitable for operation at pressures
exceeding atmospheric pressure. However, pressures of up to 40 psi are
possible for up to 1 minute and will not damage the unit.
3
E
The following conditions must be met for safe operation of the ENS 3000:
•
When installing in small plastic tanks, the unit must be installed as near as
possible to the centre of the tank.
• If the fluid is contaminated, the unit must be installed at a point where the
fluid is turbulent (e.g. at the inlet/outlet)
•
When installing in metallic rising pipes (bypass line) the sensor must be
mounted in the centre of the tube. The tube must have a concentric internal
diameter and we recommend that the internal diameter is 2.36 inch in order
to ensure correct operation.
•
Any metallic objects (e.g. metallic pipes or built-in components) inside the
tank must be at least 2.36 inch away from the active zone of the sensor.
Otherwise they will be recognised as mounting devices and the
measurements will be distorted.
• When mounting in tanks, the distance between the sensor and the walls of
the tank must be at least 0.787 inch.
•
To avoid any adverse effects on the measurements, which may be caused
by the material of the tank top, the active zone must be approx. 1.77 inch
below the top of the tank.
min. 1.77”
0.787”
2.36”
Additional installation suggestions which, from experience, reduce the effect of
electromagnetic interference:
•
Make line connections as short as possible.
•
Use screened lines.
•
The cable screening must be fitted by qualified personnel subject to the
ambient conditions and with the aim of suppressing interference.
•
Keep the unit well away from the electrical supply lines of power equipment, as
well as from any electrical or electronic equipment causing interference.
4
There is an earthing screw on the mechanical adaptor which may be used as a
functional earth terminal. If no earth connection is available because of the
particular installation circumstances (e.g.: if the tank is plastic), the functional
earth must be connected. We recommend using a 16 AWG cable and as short
a line length as possible.
The level switch ENS 3000 must be installed as near to vertically as possible in
the tank. If the ENS 3000 is not mounted vertically, then the accuracy of the
ENS deteriorates with increasing angle of incline. (Additional inaccuracy if ENS
is at an angle of 5°: approx. ±0.5% ; additional inaccuracy if at an angle of 10°:
approx. ±1.5%).
3. Commissioning
Method of determining the offset value:
We suggest the following procedure for determining the value of the fluid
level offset (difficult when display is showing nTop or nMin):
Start by installing the ENS 3000 in the tank, then check if the ENS 3000 is
flashing or is showing a value greater than zero. If the display is flashing,
the level is outside the active measuring zone (level too high or too low). If
the level is too low, gradually increase the level – by adding fluid – until the
value 0 is displayed. Then remove the ENS 3000 from the tank and use a
measuring device to measure the depth of fluid inside the tank. Depending
on the model, this depth is entered at menu point
If the display is not flashing, or if the level is too high, gradually reduce the level
– by draining the fluid – until the value 0 is shown in the display. After removing
the ENS 3000 from the tank follow the procedure described above.
in “inch “ or “cm “.
E
Important:
Before commissioning select the type of fluid: oil or cooling lubricant. For the
procedure, please see Point 7.2.
Note:
After detecting a valid measurement, the ENS 3000 with 4 switching points
will check if faults are present in the active zone. If they are higher than the
measurement detected it corrects them. After approx. 15 minutes these
corrections are stored permanently, only
Menu point
re-starts (see Point 7.2 Summary of the basic settings).
if the type of fluid is set as oil.
is used to reset faulty corrections and the learning phase
5
f
y
y
4. Operating keys of the ENS 3000
1 or 2 Switching points 4 Switching points
E
SP1
HYDAC
°C °F
indicates if
temperature in °C or °F
4-digit
digital display
Display indicating
cm
mode
Keys for setting
switching points, switch-back points
and additional functions
SP2
fluid level unit (cm/inch)
LED-Display o
the active switching point
HYDAC
°C °F
SP1
1
3 4
mode
2
Keys for setting
switching points, switch-back points
and additional functions
indicates if
temperature in °C or °F
4-digit
digital display
SP2
LED-Display of
the active switching point
5. Digital display
After switching on the supply voltage, "
display then indicates which parameter (fluid level or temperature) will be
displayed and starts to indicate the actual value (basic setting).
For 1 or 2 Switching points
ENS
" appears briefly in the display. The
2s 2s 2s
For 4 Switching points
2s 2s 2s 2s
If the level exceeds or is lower than the measuring zone of the electronic level
sensor, the following sequence is displayed:
For 1 or 2 Switching points
2s 2s 2s
Flashing displa
For 4 Switching points
2s 2s 2s 2s
Flashing displa
In the basic settings the display can be altered as follows:
•
Display of the peak fluid level measured "
n.TOP
"
Continuously displays the highest fluid level measured in the system since the
unit was last switched on or reset.
6
•
Display of the lowest fluid level "
Continuously displays the lowest fluid level measured in the system since the
unit was last switched on or reset.
•
Display of the actual temperature "
•
Display of the peak temperature"
Continuously displays the highest temperature measured in the system since
the unit was last switched on or reset.
•
Display of the lowest temperature "
Continuously displays the lowest temperature measured in the system since
the unit was last switched on or reset.
•
Display of the pre-set switching point "
S.P. 4
"
Continuously displays one of the switching points 1 to 4, depending on the
model
•
Display off "
Either "
"
S.P. 3
"
oFF
n.TOP
", "
S.P. 4
" Display is switched off
", "
n.MIN
" or "
", "
oFF
TEMP
n.MIN
", "
" appears briefly in the display following the
"
TEMP
T.TOP
T.MIN
S.P. 1
T.TOP
"
"
"
", "
S.P. 2
", "
T.MIN
S.P. 1
", "
S.P. 3
", "
S.P. 2
", "
" or
E
",
switch-on message, depending on the setting that has been made. The ; or <
key may be used to scroll through the above fluid levels and temperatures. If
neither of these keys is pressed within approx. 5 seconds, the value of the
parameter pre-set to appear in the display will be shown.
Notes:
•
If the actual fluid level exceeds the upper limit of the unit's nominal range, it
can no longer be displayed and the display starts to flash. Either the peak fluid
level that has been measured or the peak fluid level plus the pre-set offset, is
then displayed.
•
If the actual fluid level falls below the lower limit of the unit's nominal range, it
can no longer be displayed and the display will start to flash. Either "000" or
the pre-set offset is then displayed.
• If the display has been set to "display the actual fluid level" it is possible to
display first the peak fluid level by pressing the < key. Pressing the < key
again will then, in turn, display the lowest fluid level, the actual temperature,
the peak temperature, and the lowest temperature. The ; key can also be
used to scroll through the above list, but in reverse.
7
g
fOffOff
t
E
6. Output signals
6.1 SWITCHING OUTPUTS
The ENS 3000 may have 1 or 2 or 4 switching outputs. The following output
signals can be set using the basic settings:
6.1.1 Switching point (SP) mode
A switching point and a hysteresis can be assigned to each switching output.
Each output will then switch as soon as its preset switching point has been
reached and will switch back as soon as the switch-back point is reached. The
switch-back point is determined by the pre-set hysteresis (switch-back point =
switching point minus hysteresis).
Abbreviations
"
6.1.2
Window mode (WIN)
: "
S.P.1
HyS.1
", "
", "
S.P.2
HyS.2
", "
", "
S.P.3
HyS.3
" , "
" , "
S.P.4
HyS.4
" = switching point 1 to 4
" = hysteresis 1 to 4
Operating in window mode allows the unit to monitor a range. An upper and a
lower switching point which defines the range can be assigned to each
switching output.
Each output will then switch whenever the fluid level or temperature enters that
range and will switch back as soon as the fluid level or temperature exits that
range. The lower switch back point of each such range is just below the lower
switching value (1% FS below the lower limit; see Point 6.4). The upper switch
back point of each such range is just above the upper switching value (1% FS
above the upper limit, see Point 6.4). The area between the switching points
and their associated switch back points forms a safety zone that will prevent
unwanted switching operations.
Example for switching output 1 (normally open):
Measured
value
hi.1 plus 1% FS
hi.1
Of
safety zone
On
Switch-back value
Switchin
value
Lo.1 minus 1% FS
Lo.1
On
On
safety zone
Switching value
Switch-back value
Abbreviations:
"
HI 1
" to "
"
Lo 1
"to "
HI 4
Lo 4
" = High level 1 to 4 = upper switching point 1 to 4
" = Low level 1 to 4 = lower switching point 1 to 4
FS = Full Scale = relative to the full measuring range
Note:
The window function will only operate properly (switch on and off), if all switching
values (including the safety zone) are over 0 inch or -9.4 °F (model with
temperature sensor), and are within the unit's nominal measuring range.
8
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?
?
?
→
→
→
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6.2 ANALOGUE OUTPUT
The versions with 1 or 2 switching points can have an analogue output as
an option.
The output can be switched to either 4 .. 20 mA or 0 .. 10 V (corresponding
to measuring range) via the basic menu and can be assigned to fluid level
or to temperature (optional).
The versions with 4 switching points have two 0 .. 10 V analogue outputs.
In this case fluid level and temperature are permanently assigned to an output.
6.3 SETTING THE SWITCHING POINTS AND HYSTERESES OR
SWITCHING RANGES FOR WINDOW MODE
E
•
Press the "
•
Either "
•
Press the "mode" key repeatedly to scroll through to the required parameter.
(if switching point (SP) has been selected, "
hYS.4
"
selected, "
•
After 2 seconds have elapsed, the actual setting will flash.
•
Use the ; and < keys to alter the setting.
•
If necessary, use the "mode" key to select further parameters and the
;
and < keys to alter their settings.
mode
S.P.1
" key.
" or "
Hi.1
" will appear in the display.
S.P.1
", "
hYS.1
" to "
S.P.4
"; will appear, in that order. If window (WIN) mode has been
Hi.1
", "
Lo.1
" to "
Hi.4
" and "
Lo.4
" will appear)
",
• If no key has been pressed for 3 seconds, the display will revert to displaying
the primary display and the settings will be saved to the unit.
HYDAC
mode
press
"
until the required
parameter appears
mode
"
key
→
display
→
actual setting
2s
for switching
point 1
HYDAC
mode
adjust the switching point
= decrease setting
= increase setting
3s
HYDAC
mode
For the version with 4 switching points, another menu point follows at this point:
HYDAC
actual
3s
3s
3s
3s
mode
display
9
E
Notes:
•
If "
programming is disabled.
Corrective action: Set the programming enable(s) to "
(see Point 9 "Programming enable")
•
If the ; key or < key is held down while changing a setting, the value will
advance automatically.
•
Whenever any settings have been altered, "
display when the display switches over. The new setting(s) have therefore
been saved to the unit.
LOC
" appears in the display when attempting to change a setting,
PROG
free
" appears briefly in the
".
10
t
t
6.4 SETTING RANGES FOR THE SWITCHING OUTPUTS
(switching point minus switching hysteresis = switch-back point)
Probe length
in cm
Measuring zone
in cm
Switching point
in cm *
Switching hysteresis
in cm *
25.0 17.0 0.3 .. 17.0 0.1 .. 16.5
41.0 26.0 0.4 .. 26.0 0.1 .. 25.7
52.0 36.0 0.5 .. 36.0 0.2 .. 35.6
73.0 59.0 0.9 .. 59.0 0.3 .. 58.4
The increment for all units is 0.1 cm.
E
Probe length
in inch
Measuring zone
in inch
Switching point
in inch *
Switching hysteresis
in inch *
9.80 6.70 0.10 .. 6.70 0.05 .. 6.60
16.20 10.25 0.15 .. 10.25 0.05 .. 10.15
20.50 14.15 0.20 .. 14.15 0.05 .. 14.00
28.40 23.20 0.35 .. 23.20 0.15 .. 22.85
The increment for all units is 0.05 inch.
Switching poin
in °C *
Switching hysteresis
in °C *
Increment
in °C
-23.0 .. 100.0 1.0 .. 123.5 0.5
Switching poin
in °F *
Switching hysteresis
in °F *
Increment
in °F
-9 .. 212 2 .. 222 1
* All ranges given in the table can be adjusted by the increments shown and apply when the offset is zero.
11
6.5 SETTING RANGES FOR THE OFFSET
E
Probe length
in cm
Measuring zone
in cm
Setting range for
Offset in cm*
25 17 0 .. 68
41 26 0 .. 104
52 36 0 .. 144
73 59 0 .. 177
The increment for all units is 0.1 cm.
Probe length
in inch
Measuring zone
in inch
Setting range for
Offset in inch*
9.80 6.70 0 .. 26.80
16.20 10.25 0 .. 64.80
20.50 14.15 0 .. 82.00
28.40 23.20 0 .. 69.60
The increment for all units is 0.05 inch.
* All ranges given in the table can be adjusted by the increments shown.
12
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?
?
?
?
7. Basic settings
The function of the ENS 3000 can be adapted to suit the particular application
by altering several basic settings. These settings have been combined in a
menu.
7.1 ALTERING THE BASIC SETTINGS
Important note:
When the "basic setting" menu is activated, no switching operations will be
carried out!
Activating the basic settings menu
HYDAC
MEnu
3s
Display
(release the
"
mode
"
" key)
mode
press the "
and hold it down.
Switch on the supply volltage
(hold key down until "
appears in the display)
mode
" key
:
HYDAC
→
mode
press the "
the required menu item
appears, then release the
"
mode
(see Point 7.2 for a
summary of menu points)
mode
" key
→
" key until
HYDAC
mode
use the and keys to
change the setting, and then
select the next menu item.
(niv. = fluid level)
E
To exit the "Basic Settings" menu
END
Select the "
" menu item, select "
:
YES
", and the ENS 3000 returns to normal
display mode after 2s.
Note:
If no key is pressed for approx. 25 seconds, the menu closes automatically, and
any changes that may have been made will not be saved.
13
7.2 SUMMARY OF THE BASIC SETTINGS
E
Setting Display Settings
available
Assignment of switching output 1 (S.S.1)
Switching output 1 to switch
at the pre-set fluid level.
Switching output 1 to switch at the
pre-set temperature
Switching mode, switching output 1 (S.m.1)
Switching output 1 is operating in
switching point hysteresis mode
Switching output 1 is operating in
window mode
Switching direction, switching output 1
(S.d.1)
Normally open.
Normally closed.
niv / TEMP niv
SP / Win SP
ON / OFF ON
Default
setting
Switch-on delay, switching output 1 (Ton 1)
Time, in seconds, which must elapse once the
switching point has been reached or exceeded
before a switching operation will occur.
Increment: 1s
Switch-off delay, switching output 1 (T
Time, in seconds, which must elapse once the
fluid level/temperature has fallen below the
particular switch-back point before a switching
operation will occur.
Settings for switching output 2, 3 or 4 are made as above
1)
off
0 .. 9999s 1
0 .. 9999s 1
14
Setting
Primary display (Primary)
Value to be continuously
displayed:
Actual fluid level
Peak fluid level
Lowest fluid level
Actual temperature
Peak temperature
Lowest temperature
4
to
Display off
(See Point 5. "Digital Display")
Setting the unit of measurement for fluid level
(NIVEAU RANGE i.e. leve l range)
Fluid level will be displayed
in inches
Fluid level will be displayed
in cm
Switching point 1 to 4
Display
Settings
available
niv/
n.Top/
n.Min/
Temp/
T.Top/
T.Min/
S.P.1/
S.P.2/
S.P.3/
S.P.4/
OFF
inch/
cm
Default
setting
niv
inch
(depending
on version)
E
Setting the level offset (NIVEAU OFFSET) while the fluid level is displayed
The distance between the base of the tank
and the start of the active zone of the fluid
level sensor is regarded as the "offset".
Inputting this distance will generate a
reference to actual fluid levels, enabling the
actual fluid level to be displayed.
Setting the temperature unit (TEMPERATURE RANGE)
Temperature will be
displayed in °F
Temperature will be
displayed in °C
0
Fahr/ celc
Fahr
(depending
on version)
15
E
Setting Display Settings
available
Setting the type of fluid
Fluid level sensor calibrated to oil
parameters
Fluid level sensor calibrated to
cooling lubricant parameters
(Aqueous cooling Lubricants ≙ AcL)
When the new selection is saved, the change is active. On the version
with 4 SP the message
Assigning the analogue output (Select Output)*
Assigns the analogue
output to fluid level.
Assigns the analogue
output to temperature.
Analogue output (Outpu t)
The analogue output supplies a
4 .. 20 mA signal
The analogue output supplies a
0 .. 10 V signal
is also displayed.
oil/ AcL oil
niv/
TEMP
MAMP/
VOLT
Default
setting
niv
MAMP
Re-setting the measuring probe to factory settings**
The factory settings are not
active
The factory settings are active
When the new selection is saved, the message
change is active.
Version number (Version)
Displays the current software version
(view only)
To exit the "Basic settings" menu (End)
Closes the "Basic settings"
menu.
Basic settings can continue to
be processed.
If any basic settings have been altered,
display as soon as the basic settings menu is closed and then the value
selected for primary display is shown.
* This menu point appears only on versions with 1 or 2 SP.
** This menu point appears only on versions with 4 SP.
"ProG"
YES/ NO NO
is displayed and the
YES/ NO NO
appears briefly in the
16
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→
C
→
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8. Resetting the peak values
The ENS 3000 has an option for resetting the peak values of fluid level and
temperature (depending on the model). To reset a peak value, proceed as
follows:
HYDAC
mode
Press both arrow keys
simultaneously and hold
them down for 3 s.
3s
HYDAC
mode
fluid level indication
→
9. Programming enable
The ENS 3000 has two types of programming enable, both of which must be
set to "enabled" before the settings may be altered. The operating
programming enable may be set or cancelled during operation. It provides
protection against unintentional alterations of settings.
Programming disable via the main programming enable means that no change
to the settings can be carried out during operation. This serves, for example, as
a safety function or as a protection against unauthorised alterations.
9.1 ALTERING THE OPERATING PROGRAMMING ENABLE
E
HYDAC
mode
?
?
Press both arrow keys
simultaneously and hold
them down for 6 s.
6s
3s
Display
(release
arrow keys)
2s
HYDA
fluid level indication
mode
?
?
Use the or keys to change the setting
FrEE
= programming enabled
Loc
= programming disabled
3s
17
→
→
→
C
E
9.2 ALTERING THE MAIN PROGRAMMING ENABLE
Switch off the supply voltage or disconnect the unit from the supply voltage.
HYDAC
mode
?
?
Press both arrow keys
simultaneously and
hold them down.
Switch on the
supply voltage
(hold keys down for 6 s.)
6s
Display
(release
arrow keys)
2s
Use the or keys to alter the settings
FrEE
Loc
HYDA
Fluid level indication
mode
?
?
= programming enabled
= programming disabled
3s
Note:
If any settings have been changed, "
ProG
" will appear briefly in the display
when the display is switched over. The new setting is then saved in the unit.
18
10. Messages
10.1. ERROR MESSAGES
If an error is detected, a corresponding error message appears that must be
acknowledged by pressing any key. Possible error messages are as follows:
E.01 The switching points and hysteresis that have been set are such that the
resulting switch-back point falls outside the permissible setting range.
Example
Switching point has been set to 8.20 inch, the hysteresis to 9.05 inch.
Action:
E.10 A data error has been detected in the saved settings. Possible causes
Action:
E.20
Action: Acknowledge the error message by pressing any key. If the error
Correct the setting(s).
are strong electromagnetic interference or a defective component.
Check all settings (programming enable, switching points, switch-back
points and basic settings) and correct these if necessary. If this error
occurs frequently, please contact our service department.
A communication error occurring within the unit has been detected.
Possible causes are strong electromagnetic interference or a
defective component.
message continues to be displayed, please contact our service
department.
:
E
19
10.2. OTHER MESSAGES
Other messages that cannot be acknowledged by pressing any key may also
appear on the display.
E
Possible message, if the ENS has not yet been used:
: Flashing display of all centre LEDs.
The ENS detects an undefined condition, i.e. the level of the fluid
is outside the active zone. Therefore the level is either too low or
too high.
Action: If level is too low: top up the fluid until a valid measurement is
detected.
Possible message, if ENS has already been in use:
0.0 A flashing zero value in the display
If level is too high: drain the fluid until a valid measurement is
detected.
The ENS detected a change in fluid level which is below the active
zone. The last reliable fluid level measured is less than the average
value of the unit's effective range.
xx.x
: Flashing display of the right and left-hand centre LED.
A flashing non-zero value in the display
The ENS detected a change in the fluid level which is higher than the
active zone. The last reliable fluid level measured is greater than the
average value of the unit's effective range.
Possible values for x.xx: 6.70, 10.25, 14.15, 23.30 (without offset
values)
The ENS has detected a fault and the distance between the
imperfection and the measurement signal is so small that no clear
measurement signal can be identified.
20
11. Pin connections
11.1. Pin connections with 1 or 2
switching points
11.2. Pin connections with 4
switching points
Model with 4 switching outputs
and 2 analogue outputs
8-pole plug M12x1
+
18 .. 35 V
-
1
ENS 3X1P-8
3
4
2
5
U=0..10V
7
U=0..10V
8
analogue
Temp.
Imax. 250 mA
SP 1
Imax. 250 mA
SP 2
Imax. 250 mA
SP 3
Imax. 250 mA
SP 4
analogue level
L
L
R
R
E
21
E
12. Technical specifications
12.1 ENS 3000 WITHOUT TEMPERATURE SENSOR
Input data:
Fluid level sensor:
Sensor type capacitive fluid level sensor
Probe length 9.80, 16.20, 20.50, 28.40 inch
Active zone 6.70, 10.25, 14.15, 23.20 inch
Inactive zone 3.10, 5.95, 6.35, 5.20 inch
Max. speed of change in fluid level 9.80 inch: 1.57 inch/s
Repeatability ≤ 2% FS
Switching point accuracy ≤ 2% FS
Analogue outputs:
Analogue output
Switching output
Type PNP transistor output
Switching current 1 or 2 SP: max. 1.2 A each
Switching cycles > 100 million
Ambient conditions:
Ambient temperature range 32 .. +140 °F
Operating temperature range 32 .. +140 °F
Storage temperature range -40 .. +176 °F
Fluid temperature range 32 .. +140 °F **
- mark
Vibration resistance approx. 5 g
Shock resistance approx. 25 g
Other data
Max. tank pressure 7 psi short-term 40 psi(t < 1 min)
Supply voltage 18 .. 35 V with analogue output
Protection class IP 67
Fluids
Components in contact with the fluid ceramic
Display 4 digit, 7-segment LED, red,
Residual ripple supply voltage ≤ 5 %
Protection against reverse polarity of the
supply voltage, excess voltage, override and
short-circuit protection
FS = Full Scale = relative to the full measuring range
* specified for calm, non-turbulent fluid
** larger temperature range on request
*** other fluids on request
(optional) For 1 or 2 SP: user selectable
1 or 2
:
ENS 3000
16.20 inch: 2.36 inch/s
20.50 inch: 3.15 inch/s
28.40 inch: 3.94 inch/s
0 .. 10 V (ohmic resistance min.1 kΩ) or
4 .. 20 mA (ohmic resistance max. 500 Ω)
corresponding in each case to the selected
measurement range
Programmable as N/O or N/C
EN 61000-6-1/ 2/ 3/ 4
9 .. 35 V without analogue output
Hydraulic oils (mineral based),
synthetic oils, fluids containing water ***
height of digits 0.28 inch
provided
22
12.2 ENS 3000 WITH TEMPERATURE SENSOR
Input data: ENS 3000
Fluid level sensor:
Sensor type capacitive fluid level sensor
Probe length 9.80, 16.20, 20.50, 28.40 inch
Active zone 6.70, 10.25, 14.15, 23.20 inch
Inactive zone 3.10, 5.95, 6.35, 5.20 inch
Max. speed of change
in fluid level
Repeatability ≤ 2% FS
Switching point accuracy ≤ 2% FS
Temperature:
Sensor type Semi-conductor temperature sensor
Measuring range -13 .. + 212 °F
Accuracy ± 34.7 °F
Reaction speed (T90) 180s
Outputs:
Analogue output
Switching output
(optional) With 1 or 2 SP: user selectable
1 or 2 or 4
Type PNP transistor output
Assignment of switching output Temperature or fluid level (user selectable)
Switching current 1 or 2 SP: max. 1.2 A each
Switching cycles > 100 million
Ambient conditions:
Ambient temperature 32 .. +140 °F
Operating temperature range 32 .. +140 °F
Storage temperature range -40 .. +176 °F
Fluid temperature range 32 .. +140 °F **
- mark EN 61000-6-1/ 2/ 3/ 4
Vibration resistance approx. 5 g
Shock resistance approx. 25 g
Other data:
Max. tank pressure 7 psi short-term 40 psi (t < 1 min)
Supply voltage 18 .. 35 V with analogue output
Type of protection IP 67
Fluids
Components in contact with the fluid ceramic
Display 4 digit, 7-segment LED, red,
Supply voltage residual ripple ≤ 5 %
Protection against reverse polarity of the
supply voltage, excess voltage, override,
and short-circuit protection
FS = Full Scale = relative to the full measuring range
* specified for calm, non-turbulent fluid
** larger temperature range on request
*** other fluids on request
E
9.80 inch: 1.57 inch/s; 16.20 inch: 2.36 inch/s;
20.50 inch: 3.15 inch/s; 28.40 inch: 3.94 inch/s
0 .. 10 V (ohmic resistance min.1 kΩ) or
4 .. 20 mA (ohmic resistance max. 500 Ω)
With 4 SP:
0 .. 10 V (ohmic resistance min.1 kΩ)
corresponds to measuring range
Programmable as N/O or N/C
4 SP: max. 0.25 A each
9 .. 35 V without analogue output
Hydraulic oils (mineral based),
synthetic oils, fluids containing water ***
height of digits 0.28 inch
provided
23
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13. Ordering information
ENS 3 X 1 X – X –XXXX
Series no.
(determined by manufacturer)
Temperature sensor
1 = with temperature sensor
2 = without temperature sensor
Only possible with output options "2", "3" and
"5"
Mechanical connection
1 = 22mm diameter collar to fit
cutting ring coupling G22L
Electrical connection
6 = 4 pole M12x1 (w/o connector)
only possible with output options “2“ und “3“
– 400 – K
8 = 5 pole M12x1 (w/o connector)
only possible with output options “5“
P = 8 pole M12x1 (w/o connector)
only possible with output options “8“
Output
2 = 2 switching outputs
(only in conjunction with electrical connector type “6“ only)
3 = 1 switching output and 1 analogue output
(only in conjunction with electrical connector type “6“ only)
5 = 2 switching outputs and 1 analogue output
(only in conjunction with electrical connector type “8“ only)
8 = 4 switching outputs and 2 analogue outputs
(only in conjunction with electrical connector type “P“ only)
Probe length
0100 = 9.80 inch, 0162 = 16.20 inch
0205 = 20.50 inch, 0287 = 28.40 inch
Modification number
400 = US-standard (determined by manufacturer)
Material of probe
K = ceramic
24
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)
14. Accessories
14.1. ELECTRICAL CONNECTORS
14.1.1 For use with output options
"2" and "3"
&0.79“
20mm
ZBE 06 (4 pole)
M12x1 right-angle connector
Order no.: 6006788
1.38“
(35mm)
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1.10“
(28mm)
ZBE 06-02
1.04‘‘
(26.5mm)
With 2m cable
Order no.: 6006790
ZBE 06-05
With 5m cable
Order no.: 6006789
1.24‘‘
(31.50mm)
Colour code:
Pin 1: brown
Pin 2: white
Pin 3: blue
Pin 4: black
14.1.2
For use with output options
1.38“
(35mm)
"2", "3" and "5"
&
ZBE 06
(5 pole)
0.79“
20mm
M12x1 right-angle connector
Order no.: 6006786
1.10“
(28mm)
ZBE 08-02 (5 pole)
With 2m cable
Order no.: 6006792
ZBE 08-05
(5 pole)
With 5m cable
Order no.: 6006791
ZBE 08S-02
(5 pole)
With 2m screened cable
Order no.: 6006755
ZBE 08S-05 (5 pole)
With 5m screened cable
Order no.: 6006756
ZBE 08S-10 (5 pole)
With 10m screened cable
Order no.: 6023102
1.04‘‘
(26.5mm)
1.26‘‘
(32mm)
Colour code:
Pin 1: brown
Pin 2: white
Pin 3: blue
Pin 4: black
Pin 5: grey
25
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14.1.2
For use with output option "8"
ZBE 0P (8 pole)
M12x1 right-angle connector
Order no.: 6055444
ZBE 0P-02
(8 pole)
with 2m cable
Order no.: 6052697
ZBE 0P-05 (8 pole)
with 5m cable
Order no.: 6052698
&
0.79“
20mm
(35mm)
1.10“
(28mm)
1.38“
1.22‘‘
(31mm)
1.10“
(28mm)
Colour code::
Pin 1: white
Pin 2: brown
Pin 3: green
Pin 4: yellow
Pin 5: grey
Pin 6: pink
Pin 7: blue
Pin 8: red
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14.2. MECHANICAL CONNECTION
14.2.1
ZBM 19 –Straight threaded bulkhead fitting to ISO 8434
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14.2.1
ZBM 20 –Straight threaded standpipe to ISO 8434
27
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15. Dimensions
ENS 3000, ceramic
rea for clamping
or fixing ENS 3000
e.g. using
mechanical
accessory ZBM 19
or ZBM 20
4 pole
5 pole
8 pole
∅1.65
∅1.65
∅1.65
Installation
dimension ∅2.13
dimension ∅2.13
Installation
Installation
dimension ∅2.13
Dimension [inch] [inch] [inch] [inch]
I
M 6.70 10.25 14.15 23.20
L 9.80 16.20 20.50 28.40
G 13.40 19.70 24.00 32.30
Key
I Inactive zone (lower)
M Sensor zone
L Probe length
G Total length
0.87
0.04
±
1.10 ±
0.04
1.34
0.04
±
1.95
0.04
±
28
16. Application examples
16.1 HYDRAULIC POWER UNIT: TO MONITOR MINIMUM FLUID LEVEL
WITH ADVANCE WARNING AND ALARM
In this example application, an advance warning should be given when the fluid
level reaches 1.18 inch and tank refilling should be started. An alarm should be
triggered if the fluid level drops below 0.39 inch and reset once the fluid level
has reached 0.59 inch again.
To achieve this as described in the example, the following settings must be
made in the ENS 3000 menu and the two switching points must be set as
follows:
Menu item Selection Numerical value
Switching output S.S.1 assignment Niv [= fluid level]
Switching mode S.m. 1 SP
Switching direction S.d. 1 off
Switch-on delay Ton 1 0
Switch-off delay T
Switching output S.S.2 assignment niv
Switching mode S.m. 2 SP
Switching direction S.d. 2 on
Switch-on delay Ton 2 0
Switch-off delay T
off
1 0
off
2 0
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Switching point settings Numerical value
Switching output S.P.1 1.2
Hysteresis switching output Hi.1 0.02
Switching output S.P.2 0.59
Hysteresis switching output Hi.2 0.2
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16.2 HYDRAULIC POWER UNIT: TO MONITOR MINIMUM FLUID LEVEL
WITH ADVANCE WARNING AND MINIMUM TEMPERATURE
MONITORING
In this example application, an advance warning should be given when the fluid
level reaches 1.18 inch and tank refilling should be started. In addition, the
temperature of the hydraulic fluid should not drop below a minimum value. If,
for example, 68 °F is reached, a stop signal will be given. Furthermore the
temperature, in the form of a 4 .. 20 mA signal, should be made available to a
PLC card.
To achieve this as described in the example, the following settings must be
made in the ENS 3000 menu and the two switching points must be set as
follows:
Menu point Selection Numerical value
Switching output S.S.1 assignment Niv [level]
Switching mode S.m. 1 SP
Switching direction S.d. 1 off
Switch-on delay Ton 1 0
Switch-off delay T
Switching output S.S.2 assignment TEMP
Switching mode S.m. 2 SP
Switching direction S.d. 2 on
Switch-on delay Ton 2 0
Switch-off delay T
Analogue output S.ouT assignment TEMP
Analogue output ouTP MAMP
off
1 0
off
2 0
Switching point settings Numerical value
Switching output S.P.1 1.2
Hysteresis switching output Hi.1 0.02
Switching output S.P.2 0,81
Hysteresis switching output Hi.2 0.02
17. Note
The information in this brochure relates to the operating conditions and
applications described.
For applications or operating conditions not described, please contact the
relevant technical department.
Subject to technical modifications.
30
HYDAC ELECTRONIC GMBH
Hauptstr. 27
D-66128 Saarbrücken
Germany
Tel.: +49-(0)6897-509-01
Fax: +49-(0)6897-509-1726
HYDAC Service
If you have any questions concerning repair work or modifications, please
contact HYDAC Service.
HYDAC SERVICE GMBH
Hauptstr. 27
D-66128 Saarbrücken
Germany
Tel.: +49-(0)6897-509-1936
Fax: +49-(0)6897-509-1933
E
31
Notizen / Notes / Notes
32
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