AFRISO Minimelder User manual

Read instructions before using product!
Observe all safety information!
Keep instructions for future use!
06.2016 0
854.001.0206
Operating instructions
Level switches
Minimelder, Maximelder
Minimelder-R (with relay)
Maximelder-R (with relay)

2 Minimelder-R, Maximelder-R
Table of contents
1This instruction manual............................................................................................4
1.1 Precautions ..................................................................................................4
2Safety ......................................................................................................................5
2.1 Intended use ................................................................................................5
2.2 Predictable incorrect application..................................................................5
2.3 Safe handling ...............................................................................................6
2.4 Staff qualification..........................................................................................6
2.5 Modifications to the product.........................................................................6
2.6 Usage of spare parts and accessories.........................................................6
2.7 Liability information ......................................................................................7
3Product description..................................................................................................7
3.1 Function........................................................................................................9
3.2 Operating modes........................................................................................11
3.3 Application examples.................................................................................11
4Technical specifications.........................................................................................12
4.1 Approvals, tests and conformities..............................................................14
5Transport and storage...........................................................................................14
6Mounting and commissioning................................................................................15
6.1 Mounting the control unit............................................................................15
6.2 Mounting the probe....................................................................................17
6.3 Electrical connection..................................................................................18
6.4 Retrofitting an EnOcean®wireless module (optional) ................................20
6.5 Teaching in the EnOcean®wireless module (optional)..............................22
7Operation...............................................................................................................22
7.1 Commissioning the product........................................................................23
7.2 Function test...............................................................................................23
8Maintenance..........................................................................................................24
8.1 Maintenance times.....................................................................................24
8.2 Maintenance activities................................................................................24
9Suitability for use in flood hazard areas ................................................................25
10 Troubleshooting.....................................................................................................25
11 Decommissioning, disposal...................................................................................26
12 General information on EnOcean®wireless ..........................................................27
12.1 Range of EnOcean®wireless.....................................................................27
12.2 Additional information on EnOcean®wireless systems..............................30
12.3 Features of the EnOcean®technology.......................................................30

Minimelder-R, Maximelder-R 3
13 Spare parts and accessories.................................................................................31
14 Warranty................................................................................................................31
15 Copyright ...............................................................................................................31
16 Customer satisfaction............................................................................................31
17 Addresses..............................................................................................................31

This instruction manual
4 Minimelder-R, Maximelder-R
1 This instruction manual
This instruction manual is part of the product.
Read this manual before using the product.
Keep this manual during the entire service life of the product
and always have it readily available for reference.
Always hand this manual over to future owners or users of the
product.
1.1 Precautions
WARNING TERM
Type and source of the danger are shown here.
Precautions to take in order to avoid the danger are shown
here.
There are three different levels of warnings:
Warning term
Meaning
DANGER
Immediately imminent danger!
Failure to observe the information will result in
death or severe injuries.
WARNING
Possibly imminent danger!
Failure to observe the information may result in
death or severe injuries.
CAUTION
Dangerous situation!
Failure to observe the information may result in
minor or severe injuries as well as damage to
property.

Safety
Minimelder-R, Maximelder-R 5
2 Safety
2.1 Intended use
Minimelder/Maximelder may only be used to signal minimum levels
and maximum levels in tanks containing liquids.
Minimelder/Maximelder may only be used for the following liquids:
Water
Fuel oil EL, L or M
Oil/water mixtures
and comparable liquids (not AI,AII !) with equivalent viscosity if these
liquids are compatible with the following wetted parts:
Plastic: polypropylene
Cable: Oilflex 100, resistant to acids, lye and oils
O ring: NBR (SH 70)
Weight/screw connection: Brass
Any use other than the application explicitly permitted in this instruc-
tion manual is not permitted.
2.2 Predictable incorrect application
Minimelder/Maximelder must never be used in the following cases:
Hazardous area (Ex)
If the product is operated in hazardous areas, sparks may cause
deflagrations, fires or explosions.

Safety
6 Minimelder-R, Maximelder-R
2.3 Safe handling
This product represents state-of-the-art technology and is made ac-
cording to the pertinent safety regulations. Each product is subjected
to a function and safety test prior to shipping.
Operate the product only when it is in perfect condition. Always
observe the operating instructions, all pertinent local and na-
tional directives and guidelines as well as the applicable safety
regulations and directives concerning the prevention of acci-
dents.
WARNING
Severe burns or death caused by mains voltage (AC 230 V,
50 Hz) in the control unit.
Do not expose the control unit to water.
Disconnect the mains voltage supply before opening the control
unit or before performing maintenance and cleaning work and
make sure it cannot be switched on.
Do not tamper with the control unit in any way whatsoever.
2.4 Staff qualification
The product may only be mounted, commissioned, operated, main-
tained, decommissioned and disposed of by qualified, specially
trained staff.
Electrical work may only be performed by trained electricians and in
compliance with all applicable local and national directives.
2.5 Modifications to the product
Changes or modifications made to the product by unauthorised per-
sons may lead to malfunctions and are prohibited for safety reasons.
2.6 Usage of spare parts and accessories
Usage of unsuitable spare parts and accessories may cause dam-
age to the product.
Use only genuine spare parts and accessories of the manufac-
turer (see chapter 13, page 31).

Product description
Minimelder-R, Maximelder-R 7
2.7 Liability information
The manufacturer shall not be liable in any form whatsoever for
direct or consequential damage resulting from failure to observe the
technical instructions, guidelines and recommendations.
The manufacturer or the sales company shall not be liable for costs
or damages incurred by the user or by third parties in the usage or
application of this product, in particular in case of improper use of the
product, misuse or malfunction of the connection, malfunction of the
product or of connected products. The manufacturer or the sales
company shall not be liable for damage whatsoever resulting from
any use other than the use explicitly permitted in this instruction
manual.
The manufacturer shall not be liable for misprints.
3 Product description
Minimelder/Maximelder consists of a control unit and a probe. The
control unit and the probe are connected by means of a two-wire
signal cable.
Minimelder triggers an alarm when the probe is no longer sub-
merged. Maximelder triggers an alarm when the probe is sub-
merged.

Product description
8 Minimelder-R, Maximelder-R
Probe
The probe consists of a float switch in which a moving magnet
switches a contact. The magnet is embedded in a float. The float
moves up when the probe is submerged in a liquid. The factory set-
ting of the magnet in the float causes Minimelder to switch when the
probe is no longer submerged and Maximelder to switch when the
probe is submerged.
1
Signal cable
2
Brass weight
3
Float switch
Fig. 1: Probe

Product description
Minimelder-R, Maximelder-R 9
Control unit
The control unit contains the following elements in an impact-
resistant plastic housing: display elements and controls as well as all
electronic components for converting the probe signal into a digital
output signal. In the case of Minimelder-R and Maximelder-R, the
output signal is available as a voltage-free relay contact (normally
open contact).
a
Green pilot lamp
b
Test button
c
Red alarm lamp
d
Acknowledge
button
e
Without function
Fig. 2: Control unit
3.1 Function
When power is supplied, the green pilot lamp indicates that the
product is ready for operation. If no alarm is present, you can press
the Test button at the control unit to simulate an alarm. The audible
alarm can be acknowledged with the Acknowledge button in the case
of an alarm. The red alarm lamp remains on as long as the alarm
condition persists.
Minimelder
If the probe of Minimelder is not submerged in liquid, the alarm
buzzer and the red alarm lamp are activated. If the probe is sub-
merged in liquid, the alarm buzzer and the red alarm lamp are deac-
tivated
Minimelder-R is equipped with a voltage-free relay contact which
closes when an alarm is triggered.

Product description
10 Minimelder-R, Maximelder-R
Maximelder
If the probe of Maximelder is submerged in liquid, the alarm buzzer
and the red alarm lamp are activated. At the same time, the voltage-
free relay contact closes. If the probe is not submerged in liquid, the
alarm buzzer and the red alarm lamp are deactivated and the relay
contact opens.
Maximelder is only available with a relay.
Control unit
The control unit continuously monitors the electrical resistance be-
tween the two electrodes of the probe. The green pilot lamp lights up
when the device is ready for operation. If the probe resistance is less
than 5 k, there is no alarm condition: The red alarm lamp is off, the
relay is:
De-energised (in the operating mode Eco)
Energised (in the operating mode FailSafe)
If the resistance is greater than 5 k, an alarm condition, i.e. a leak
has been detected by the control unit: The red alarm lamp and the
audible alarm are on and the relay is:
Energised (in the operating mode Eco)
De-energised (in the operating mode FailSafe)
The audible alarm can be muted with the "Acknowledge" button in
the case of an alarm.
No alarm is triggered in case of a power failure. When mains power
is available again, the product immediately resumes operation. If a
leak has occurred in the meantime, this is signalled.
The green pilot lamp lights up as soon as Minimelder-R and Max-
imelder-R are supplied with mains voltage. The Test button allows
you to simulate an alarm condition in order to perform a function
check.
Products with EnOcean®wireless module
In the case of an alarm, the wireless module transmits the alarm
message via EnOcean®wireless technology in addition to the visual
and audible signals.

Product description
Minimelder-R, Maximelder-R 11
3.2 Operating modes
Eco:
Minimelder-R and Maximelder-R are equipped with an output relay to
transmit the alarm signal to additional external equipment. If no error
condition is present, the relay is de-energised; in case of an alarm,
the relay is energised.
FailSafe:
Minimelder-R and Maximelder-R are equipped with an output relay to
transmit the alarm signal to additional external equipment. If no error
condition is present, the relay is energised; in case of an alarm, the
relay is de-energised.
Minimelder-R and Maximelder-R can be operated with or without ad-
ditional external equipment.
- Visual and audible alarms
- Remote alarm equipment
- Building control systems, etc.
3.3 Application examples
Fig. 3: Standard application Minimelder-R

Technical specifications
12 Minimelder-R, Maximelder-R
Fig. 4: Standard application Maximelder-R
4 Technical specifications
Table 1: Technical specifications probe
Parameter
Value
General specifications
Dimensions (Ø x L)
24 x 85 mm
Weight
0.35 kg
Material probe housing
Polypropylene
Material probe weight
Brass
Resistance
Water, oils
Connection cable:
Standard length
Max. length
Oilflex 2 x 0.5 mm²
5 m
50 m (shielded)
Operating temperature range
Ambient
-5 °C to +50 °C
Storage
-10 °C to +60 °C
Supply voltage
Probe voltage
Max. 17 V, AC

Technical specifications
Minimelder-R, Maximelder-R 13
Parameter
Value
Electrical safety
Degree of protection
IP 68 (EN 60529)
Table 2: Technical specifications control unit
Parameter
Value
General specifications
Dimensions housing
(W x H x D)
100 x 188 x 65 mm
Weight
0.4 kg
Response delay
< 1 second
Additional connections
1 output relay (1 changeover con-
tact)
Breaking capacity output
relay
Max. 250 V, 2 A, resistive load
Relay fuse
T 2 A
Emissions
The A-evaluated sound level of the
audible alarm is at least 70 dB(A) at
a distance of one metre.
Operating temperature range
Ambient
-5 °C to +50 °C
Supply voltage
Nominal voltage
AC 230 V ± 10 %, 50/60 Hz
Nominal power
5 VA
Mains fuse
T 100 mA H (1.5 kA)
Electrical safety
Protection class
II (EN 60730-1)
Degree of protection
IP 30 (EN 60529)
Electromagnetic compatibility (EMC)
Interference
EN 60730-1:2011
Noise immunity
EN 60730-1:2011
EnOcean®wireless

Transport and storage
14 Minimelder-R, Maximelder-R
Parameter
Value
Frequency
868.3 MHZ
Transmission power
Max. 10 mW
Range
See chapter 12.1, page 27.
EnOcean Equipment Profile
(EEP)
A5-30-04
Telecommunications Di-
rective 1999/5/EC
EN 301489-3, EN 300220-1,
EN 300220-2, EN 50371
Cable glands at control unit
The centre rubber piece can be replaced
with a cable gland M20.
Cable gland
Cable diameter
M16
4.0-8.8 mm
M20
8.0-12.5 mm
4.1 Approvals, tests and conformities
Minimelder/Maximelder complies with the EMC Directive
(2014/30/EU), the Low Voltage Directive (2014/35/EU) and the
RoHS- Directive (2011/65/EU).
Minimelder/Maximelder with EnOcean®wireless module also com-
plies with the Telecommunication Directive 1999/5/EC.
5 Transport and storage
CAUTION
Damage to the product due to improper transport.
Do not throw or drop the product.
Protect the product from wetness, humidity, dirt and dust.

Mounting and commissioning
Minimelder-R, Maximelder-R 15
CAUTION
Damage to the product due to improper storage.
Store the product in a clean and dry environment.
Only store the product within the permissible temperature range,
see chapter 4, page 12.
Protect the product from wetness, humidity, dirt and dust.
6 Mounting and commissioning
Do not install the control unit and the probe in hazardous areas
(EX areas).
6.1 Mounting the control unit
Fig. 5: Control unit with mounting frame for panel mounting; right:
control panel cut out
Mount the control unit to an even, rigid and dry wall at eye level.
The control unit must be accessible and visible at all times.
The control unit must not be exposed to water or splash water.
The control unit must not be installed in damp rooms.
The permissible ambient temperature at the control unit must
not be exceeded, see table 2, page 13.
Protect the control unit from direct atmospheric influences if it is
installed outdoors.

Mounting and commissioning
16 Minimelder-R, Maximelder-R
1. Open the control unit.
2. Mount the control unit to the wall (Aor B).
A
1
Mount the screw to the wall.
B
Drill the fixing holes in the bottom
part with a Ø 5 mm drill.
Mount the bottom part to the wall
with the screws shipped with the
unit.
2
Fit the control unit.
3
Fixate the control unit by screwing the
bottom lug to the wall.

Mounting and commissioning
Minimelder-R, Maximelder-R 17
3. Connect the unit electrically, see chapter 6.3, page 18.
4. Close the control unit.
6.2 Mounting the probe
Mount the probe in such a way that it is suspended at the
height/level of the required switching point.
The probe can be fastened by means of the enclosed G 1"
screw connector. The probe weight ensures that the probe is
suspended vertically in the liquid.

Mounting and commissioning
18 Minimelder-R, Maximelder-R
6.3 Electrical connection
Mains voltage is interrupted and cannot be switched on.
Observe the VDE regulations, the pertinent regulations concerning
the prevention of accidents, the operating instructions for the leak
detector and the container (tank) as well as all other applicable na-
tional and local regulations.
Connect the control unit directly to the 230 V supply mains without a
switch and without a plug.
1
Mains fuse F1
2
Relay fuse F2
3
Mains voltage
4
Relay for
additional alarm
5
Probe
6
Female con-
nector for
EnOcean®wire-
less module
Fig. 6: Electrical connection
Power supply
Connect Minimelder/Maximelder to mains by means of a permanent-
ly installed cable such as NYM-J 3 x 1.5 mm².
1. Route the mains cable through the right cable gland into the
control unit.
2. The phase must be connected to terminal L1, the neutral con-
ductor to terminal N.
3. Use a separate fuse as per EN 60127-2 for the cable to the con-
trol unit (nominal rating 10 A, breaking capacity at least 1.5 kA).
Probe
If the control unit and the container to be monitored are mount-
ed next to each other, the signal cable can be directly connect-
ed to the control unit.
Standard shielded cable 2 x 0.5 mm² can be used to extend the
probe cable. The maximum length of the extension cable is
50 m.
Do not route the probe cable next to mains cables; danger of in-
terference.

Mounting and commissioning
Minimelder-R, Maximelder-R 19
Protect the signal cable from damage; use a metal pipe, if re-
quired.
Route the signal cable from the probe through the left cable
gland into the control unit and connect it to the 2-pole terminal
with the designation "Probe" in the control unit. You do not have
to ensure a specific polarity.
Output
The output signal of Minimelder-R and Maximelder-R leak detector is
made available via a voltage-free relay contact (normally open con-
tact). If no error condition is present, the relay is de-energised; in
case of an alarm, the relay is energised. The relay contact is fused
with a T 2 A fuse (slow-blow).
Minimelder is not equipped with an output relay.
CAUTION
Electrical systems may be considerably impacted and the
switching contact may be destroyed by voltage peaks when
inductive consumers are switched off.
Use commercially available standard RC combinations such as
0.1 µF/100 Ohm for inductive consumers.
Setting the operating mode Eco/failsafe
Set the jumper as required:
1
Eco
2
Failsafe
Fig. 7: Jumper
Table 3: Operating mode
Operating
mode
Normal operation
Alarm condition
Eco
Relay de-energised.
Relay energises
Failsafe
Relay energised
Relay de-energises

Mounting and commissioning
20 Minimelder-R, Maximelder-R
6.4 Retrofitting an EnOcean®wireless module (optional)
Disconnect Minimelder-R/Maximelder-R from mains voltage.
1. Open the cover of the control unit (see chapter 6.1, page 15).
CAUTION
Damage to the electronic components due to electrostatic dis-
charge
Take precautions when handling components that can be damaged
by electrostatic discharge.
Always earth yourself before touching electronic components.
Do not touch the EnOcean®wireless module to plug it in; use
the anti-electrostatic film to plug the wireless module for the tim-
er module into the slot.
1
Female connector for
EnOcean®wireless module
2
Position antenna
3
Housing opening (for
fastening the anten-
na)