Swann AMI Hydrogen QED Operator's Manual
AMI Hydrogen QED
Version 6.22 and higher
A-96.250.791 / 040219
Operator’
s Manual
© 2017, SWAN ANALYTISCHE INSTRUMENTE AG, Switzerland, all rights reserved
subject to change without notice.
Customer Support
SWAN and its representatives maintain a fully trained staff of technical specialists
around the world. For any technical question, contact your nearest
SWAN representative, or the manufacturer:
SWAN ANALYTISCHE INSTRUMENTE AG
Studbachstrasse 13
8340 Hinwil
Switzerland
Internet: www.swan.ch
E-mail: support@swan.ch
Document Status
Title:
AMI Hydrogen QED Operator’s Manual
ID:
A-96.250.791
Revision Issue
00 April 2014 First Edition
01 July 2017 New mainboard V2.5, firmware V6.20
AMI Hydrogen QED
A-96.250.791 / 040219 1
Table of Contents
1. Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Warning Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. General Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1. Description of the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2. Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3. Instrument Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1. Installation Check List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2. Mounting of Instrument Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3. Connecting Sample Inlet and Outlet. . . . . . . . . . . . . . . . . . . . . . . 15
3.3.1 Swagelok Fitting Stainless Steel at Sample Inlet . . . . . . . . . . . 15
3.3.2 Sample Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4. Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.5. Connection Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.6. Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.7. Relay Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7.2 Alarm Relay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7.3 Relay Contacts 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.8. Signal Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.8.1 Signal output 1 and 2 (current outputs) . . . . . . . . . . . . . . . . . . . 24
3.9. Interface Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.9.1 Signal Output 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.9.2 Profibus, Modbus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.9.3 HART Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.9.4 USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4. Instrument Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.1. Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1. Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2. Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.3. Software Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.4. Changing Parameters and Values . . . . . . . . . . . . . . . . . . . . . . . . 32
2 A-96.250.791 / 040219
AMI Hydrogen QED
6. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1. Maintenance Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.2. Stop of Operation for Maintenance. . . . . . . . . . . . . . . . . . . . . . . . 33
6.3. Maintenance of the Hydrogen Sensor . . . . . . . . . . . . . . . . . . . . . 34
6.3.1 Hydrogen Sensor Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.3.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.3.3 Faraday Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.3.4 Replace Hydrogen Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.4 Maintenance of the Faraday Electrode . . . . . . . . . . . . . . . . . . . . . 38
6.5. Quality Assurance of the Instrument. . . . . . . . . . . . . . . . . . . . . . . 40
6.5.1 Activate SWAN Quality assurance procedure. . . . . . . . . . . . . . 41
6.5.2 Pre-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.5.3 Connect the sample lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.5.4 Carry out comparison measurement . . . . . . . . . . . . . . . . . . . . . 44
6.5.5 Completion of the measurement . . . . . . . . . . . . . . . . . . . . . . . . 45
6.6. Longer Stop of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.1. Error List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.2. Replacing Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8. Program Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.1. Messages (Main Menu 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.2. Diagnostics (Main Menu 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.3. Maintenance (Main Menu 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.4. Operation (Main Menu 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.5. Installation (Main Menu 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9. Program List and Explanations . . . . . . . . . . . . . . . . . . . . . . . . . 55
1 Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10. Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
11. Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
12. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
AMI Hydrogen QED
Safety Instructions
A-96.250.791 / 040219 3
AMI Hydrogen QED Operator’s Manual
This document describes the main steps for instrument setup, operation and maintenance.
1. Safety Instructions
General The instructions included in this section explain the potential risks
associated with instrument operation and provide important safety
practices designed to minimize these risks.
If you carefully follow the information contained in this section, you
can protect yourself from hazards and create a safer work environment.
More safety instructions are given throughout this manual, at the
respective locations where observation is most important.
Strictly follow all safety instructions in this publication.
Tar get
audience
Operator: Qualified person who uses the equipment
for its intended purpose.
Instrument operation requires thorough knowledge of applications,
instrument functions and software program as well as all applicable
safety rules and regulations.
OM Location The AMI Operator’s Manual shall be kept in proximity of the instru-
ment.
Qualification,
Training
To be qualified for instrument installation and operation, you must:
read and understand the instructions in this manual as well as
the Material Safety Data Sheets.
know the relevant safety rules and regulations.
4 A-96.250.791 / 040219
AMI Hydrogen QED
Safety Instructions
1.1. Warning Notices
The symbols used for safety-related notices have the following significance:
DANGER
Your life or physical wellbeing are in serious danger if such
warnings are ignored.
Follow the prevention instructions carefully.
WARNING
Severe injuries or damage to the equipment can occur if such
warnings are ignored.
Follow the prevention instructions carefully.
CAUTION
Damage to the equipment, minor injury, malfunctions or incorrect process can be the consequence if such warnings are ignored.
Follow the prevention instructions carefully.
Mandatory
Signs
The importance of the mandatory signs in this manual.
Safety goggles
Safety gloves
AMI Hydrogen QED
Safety Instructions
A-96.250.791 / 040219 5
Warning Signs The importance of the warning signs in this manual.
1.2. General Safety Regulations
Legal
Requirements
The user is responsible for proper system operation.
All precautions must be followed to ensure safe operation
of the instrument.
Spare Parts
and
Disposables
Use only official SWAN spare parts and disposables. If other parts
are used during the normal warranty period, the manufacturer’s
warranty is voided.
Electrical shock hazard
Corrosive
Harmful to health
Flammable
Warning general
Attention general
6 A-96.250.791 / 040219
AMI Hydrogen QED
Safety Instructions
Modifications Modifications and instrument upgrades shall only be carried out by
an authorized Service Technician. SWAN will not accept responsibility for any claim resulting from unauthorized modification or alteration.
WARNING
Risk of Electrical Shock
If proper operation is no longer possible, the instrument must be
disconnected from all power lines, and measures must be taken
to prevent inadvertent operation.
To prevent from electrical shock, always make sure that the
ground wire is connected.
Service shall be performed by authorized personnel only.
Whenever electronic service is required, disconnect instru-
ment power and power of devices connected to.
–relay 1,
–relay 2,
– alarm relay
WARNING
For safe instrument installation and operation you must read
and understand the instructions in this manual.
WARNING
Only SWAN trained and authorized personnel shall perform the
tasks described in this document.
AMI Hydrogen QED
Product Description
A-96.250.791 / 040219 7
2. Product Description
This chapter contains technical data, requirements and performance data.
2.1. Description of the System
Application
Range
The AMI Hydrogen QED is a monitor for continuous measurement
of dissolved hydrogen in water.
Signal
Outputs
Two signal outputs programmable for measured values (freely scalable, linear or bilinear) or as continuous control output (control parameters programmable).
Current loop: 0/4 –20 mA
Maximal burden: 510 Ω
Third signal output available as an option. The third signal output
can be operated as a current source or as a current sink (selectable
via switch).
Relay Two potential-free contacts programmable as limit switches for
measuring values, controllers or timer for system cleaning with automatic hold function. Both contacts can be used as normally open
or normally closed.
Maximum load: 1 A/250 VAC
Alarm Relay One potential free contact.
Alternatively:
Open during normal operation, closed on error and loss of
power.
Closed during normal operation, open on error and loss of
power.
Summary alarm indication for programmable alarm values and instrument faults.
Input For potential-free contact to freeze the measuring value or to inter-
rupt control in automated installations (hold function or remote-off)
Safety
Features
No data loss after power failure. All data is saved in non-volatile
memory. Over voltage protection of in- and outputs. Galvanic separation of measuring inputs and signal outputs.
8 A-96.250.791 / 040219
AMI Hydrogen QED
Product Description
Communica-
tion Interface
(optional)
USB Interface for logger download
Third signal output (can be used in parallel to the USB interface)
RS485 with Fieldbus protocol Modbus or Profibus DP
HART interface
Faraday
Verification
The Faraday verification is used to check the sensor periodically.
The intervals can be freely programmed in the menu operation.
Measuring
principle
Hydrogen is measured by an amperometric method. A small voltage, called polarization voltage, is applied between two electrodes.
If a hydrogen molecule hits the positively charged platinum electrode (anode) it will be oxidized. This means that two electrons are
removed under the influence of the positive voltage and the catalytic properties of the platinum. This leaves two (charged) protons and
two electrons behind.
(1) H2 ––> 2 H
+
+ 2 e
-
The two electrons are transported by the polarization voltage
source to the negatively charged silver-silver chloride electrode
(cathode), causing the following reaction:
(2) AgCl + 2 e
-
––> Ag + 2 Cl
-
Finally the two kinds of ions produced will combine into a small
amount of hydrochloric acid:
(3) 2 H+ + 2 Cl
-
––> 2 HCl
If the hydrogen concentration in the sample increases, more hydrogen molecules will hit the platinum anode within a given time.
Therefore, more electrons will be transported within a given time,
which corresponds to an increased electrical current. This current
can be measured by the electronics. It is directly proportional to the
concentration of hydrogen in the sample. Formula (2) indicates that
in the course of the hydrogen measurement the silver chloride is reduced to elemental silver. If all silver chloride has been converted to
silver the hydrogen sensor has to be refurbished in the factory.
However, there is enough silver chloride provided to keep the sensor operational during two years under normal conditions.
The actual SWAN hydrogen-sensor design is based on the wellknown Clark principle. Clark-type hydrogen sensors have been
successfully in use for many years.
AMI Hydrogen QED
Product Description
A-96.250.791 / 040219 9
Hydrogen
sensor
schematic
view
A
B
C
D
E
F
Polarization voltage source
Display
Sensor body
Sample
Cathode
Electrolyte
G
H
I
J
Anode
Temperature sensor
Thin layer of electrolyte
Hydrogen permeable
membrane
25.6 °C
1.24 ppb
A
B
C
D
E
F
G
H
J
I
10 A-96.250.791 / 040219
AMI Hydrogen QED
Product Description
Fluidics Swansensor Hydrogen combined with QV-flow PMMA OTG flow
cell [A].
The sample flows via sample inlet [H] through the flow regulating
valve [E], where the flow rate can be adjusted. Then the sample
flows through the Faraday electrode [D] into the measuring cell
were the hydrogen concentration of the sample is measured.
The sample leaves the measuring cell via flow sensor [B] through
the sample outlet [F] and flows into the drain funnel [G].
A
B
C
D
Flow cell
Flow sensor
Swansensor hydrogen
Faraday electrode
E
F
G
H
Flow regulating valve
Sample outlet
Drain funnel
Sample inlet
A
B
C
D
F
E
G
H
AMI Hydrogen QED
Product Description
A-96.250.791 / 040219 11
2.2. Technical Data
Power Supply Voltage:
Power consumption:
100–240 VAC (± 10%)
50/60 Hz (± 5%)
or 24 VDC (± 10%)
max. 30 VA
Electronics Aluminium with a protection degree of IP 66 / NEMA 4X
housing Ambient temperature:
Limit range of operation:
Storage and transport:
Humidity:
Display:
-10 to +50 °C
-25 to +65 °C
-30 to +85 °C
10–90% rel., non condensing
backlit LCD, 75 x 45 mm
Sample
requirements
Flow rate:
Temperature:
Inlet pressure:
Outlet pressure:
6 to 20 l/ h
up to 45 °C
0.2 to 1 bar
pressure free
Flow cell and
connection
Flow cell made of acrylic glass with built-in flow adjustment valve
and digital sample flow meter
Sample inlet:
Sample outlet:
1/4” Swagelok tube adapter
flexible tube 8x 6 mm
Measuring
range
Range
0.01–9.99 ppb
10.0–99.9
100–800 ppb
0–50% saturation
Resolution
0.01 ppb
0.1 ppb
1 ppb
0.1% Saturation
Accuracy
Reprodu-
cibility
±5% of measured value or ± 0.5 ppb
±1% of measured value or ± 0.5 ppb
12 A-96.250.791 / 040219
AMI Hydrogen QED
Product Description
Dimensions Panel:
Mounting hole distance
Screws:
Weight:
280x850x150 mm
254x 824
8 mm
12.0 kg
Exit Enter
AMI Hydrogen
850 mm / 33½”
13 mm / ½”
4 x dia. 10 mm /
3
/
8
”
254 mm/ 10”
280 mm/ 11”
824 mm / 32
7
/
16
”
AMI Hydrogen QED
Product Description
A-96.250.791 / 040219 13
2.3. Instrument Overview
A
B
C
D
E
F
Panel
AMI Transmitter
Sample outlet
Flow cell
Flow sensor
Hydrogen sensor
G
H
I
J
K
Faraday control
Faraday electrode
Flow regulating valve
Drain funnel
Sample inlet
A
B
C
D
E
F
G
H
I
J
K
14 A-96.250.791 / 040219
AMI Hydrogen QED
Installation
3. Installation
3.1. Installation Check List
3.2. Mounting of Instrument Panel
The first part of this chapter describes the preparing and placing of
the system for use.
The instrument must only be installed by trained personnel.
Mount the instrument in vertical position.
For ease of operation mount it so that the display is at eye
level.
For the installation a kit containing the following installation
material is available:
– 4 Screws 8x 60 mm
– 4 Dowels
– 4 Washers 8.4/ 24 mm
Mounting re-
quirements
The instrument is only intended for indoor installation.
For dimensions see Dimensions, p. 12
Check
Instrument’s specification must conform to the National
Electrical Code, all state and local codes, and all plant codes
and standards for electrical equipment.
Installation
Connect the sample and waste line.
Electrical Wiring
Do not switch on the Instrument until all electrical connections
are made.
Connect all external devices like limit switches, current loops
and pumps.
Connect power cord, see Electrical Connections, p. 17.
Power-up
Open the flow regulating valve.
Switch on power
Adjust the sample flow to 6–20 l/ h.
Instrument
Setup
Program all parameters for external devices (interface,
recorders, etc.).
Program all parameters for instrument operation (limits,
alarms).
Run-in period
Let the instrument run continuously for 1 h.
AMI Hydrogen QED
Installation
A-96.250.791 / 040219 15
3.3. Connecting Sample Inlet and Outlet
3.3.1 Swagelok Fitting Stainless Steel at Sample Inlet
Preparation Cut the tube to length and deburr it. The tube must be straight and
free from blemishes for approximately 1,5 x tube diameter from the
end.
Lubrication with lubricating oil, MoS2, Teflon etc. is recommended
for the assembly and reassembly of bigger sized unions (thread,
compression cone).
Installation 1 Insert the compression ferrule [C] and the compression
cone [D] into the union nut [B].
2 Screw on the union nut onto the body, do not tighten it.
3 Push the stainless steel pipe through the union nut as far as it
reaches the stop of the body.
4 Mark the union nut at 6 o’clock position.
5 While holding the fitting body steady, tighten the nut union 1¼
rotation using an open ended spanner.
A
B
C
Stainless steel tube
Union nut
Compression ferrule
D
E
F
Compression cone
Body
Tightened connection
12
3
9
6
ABCDE
F
16 A-96.250.791 / 040219
AMI Hydrogen QED
Installation
3.3.2 Sample Outlet
1/2” tube at waste funnel.
Connect the 1/2” tube [C] to the hose nozzle [B] and place it into a
pressure free drain.
A
B
C
Waste funnel
Hose nozzle
1/2” tube
A
B
C
AMI Hydrogen QED
Installation
A-96.250.791 / 040219 17
3.4. Electrical Connections
WARNING
Risk of electrical shock.
Do not perform any work on electrical components if the transmitter is switched on. Failure to follow safety instructions could
result in serious injury or death.
Always turn off power before manipulating electric parts.
Grounding requirements: Only operate the instrument from
an power outlet which has a ground connection.
Make sure the power specification of the instrument corre-
sponds to the power on site.
Cable
thicknesses
In order to comply with IP66, use the following cable thicknesses
NOTICE: Protect unused cable glands
Wire For power and relays: Use max. 1.5 mm
2
/ AWG 14 stranded
wire with end sleeves.
For signal outputs and input: Use 0.25 mm
2
/ AWG 23
stranded wire with end sleeves.
A
B
C
PG 11 cable gland: cable Ø
outer
5–10 mm
PG 7 cable gland: cable Ø
outer
3–6.5 mm
PG 9 cable gland: cable Ø
outer
4–8 mm
ABC
18 A-96.250.791 / 040219
AMI Hydrogen QED
Installation
WARNING
External Voltage.
External supplied devices connected to relay 1 or 2 or to the
alarm relay can cause electrical shocks
Make sure that the devices connected to the following con-
tacts are disconnected from the power before resuming installation.
–relay 1
–relay 2
– alarm relay
WARNING
To prevent from electrical shock, do not connect the instrument
to the power unless the ground wire (PE) is connected.
Do not connect unless specifically instructed to do so.
WARNING
The mains of the AMI Transmitter must be secured by a main
switch and appropriate fuse or circuit breaker.
AMI Hydrogen QED
Installation
A-96.250.791 / 040219 19
3.5. Connection Diagram
CAUTION
Use only the terminals shown in this diagram, and only for the
mentioned purpose. Use of any other terminals will cause short
circuits with possible corresponding consequences to material
and personnel.
20 A-96.250.791 / 040219
AMI Hydrogen QED
Installation
3.6. Power Supply
WARNING
Electrical shock hazard
Installation and maintenance of electrical parts must be performed by professionals.
Always turn off power before manipulating electric parts.
NOTICE: The protective earth wire (ground) has to be
connected to the grounding terminal.
Installation
requirements
The installation must meet the following requirements.
Mains fuse 1.6 AT
Mains cable to comply with standards IEC 60227 or IEC
60245; flammable rating FV1
Mains equipped with an external switch or circuit-breaker
– near the instrument
– easily accessible to the operator
– marked as interrupter for AMI Hydrogen QED
A
B
C
D
Power supply connector
Neutral conductor, Terminal 2
Phase conductor, Terminal 1
Protective earth PE
A
B
C
D
AMI Hydrogen QED
Installation
A-96.250.791 / 040219 21
3.7. Relay Contacts
Programming of the relay contacts see 5.3 Relay Contacts, p. 65.
3.7.1 Input
NOTICE: Use only potential-free (dry) contacts.
The total resistance (sum of cable resistance and resistance of
the relay contact) must be less than 50 Ω.
Terminals 16/42
If signal output is set to hold, measurement is interrupted if input is
active.
For programming see menu 5.3.4, p. 71.
3.7.2 Alarm Relay
NOTICE: Max. load1 A T / 250 VAC
Alarm output for system errors.
Error codes see Troubleshooting, p. 46
Programming see menu 5.3.1, p. 65
NOTICE: With certain alarms and certain settings of the AMI
transmitter the alarm relay does not switch. The error, however,
is shown on the display.
1) usual use
Terminals Description Relay connection
NC
1)
Normally
Closed
10/11 Active (opened) during normal
operation.
Inactive (closed) on error and
loss of power.
NO
Normally
Open
12/11 Active (closed) during normal
operation.
Inactive (opened) on error and
loss of power.
10
12
11
0V
1)
10
12
11
0V
22 A-96.250.791 / 040219
AMI Hydrogen QED
Installation
3.7.3 Relay Contacts 1 and 2
NOTICE: Rated load 1 AT / 250 VAC
Relay 1 and 2 can be configured as normally open or as normally
closed. Standard for both relays is normally open. To configure a
Relay as normally closed, set the jumper in the upper position.
NOTICE: Some error codes and the instrument status may
influence the status of the relays described below.
For programming see Menu Installation 5.3.2 and 5.3. 3, p. 67
Relay
config. Terminals
Jumper
pos. Description Relay configuration
Normally
Open
6/7: Relay 1
8/9: Relay 2
Inactive (opened) during
normal operation and
loss of power.
Active (closed) when a
programmed function is
executed.
Normally
Closed
6/7: Relay 1
8/9: Relay 2
Inactive (closed) during
normal operation and
loss of power.
Active (opened) when a
programmed function is
executed.
6
0V
7
6
0V
7
ABJumper set as normally open (standard setting)
Jumper set as normally closed
A
B
AMI Hydrogen QED
Installation
A-96.250.791 / 040219 23
CAUTION
Risk of damage of the relays in the AMI transmitter due to
heavy inductive load.
Heavy inductive or directly controlled loads (solenoid valves,
dosing pumps) may destroy the relay contacts.
To switch inductive loads > 0.1 A use an AMI relay box avail-
able as an option or suitable external power relays.
Inductive load Small inductive loads (max 0.1 A) as for example the coil of a pow-
er relay can be switched directly. To avoid noise voltage in the
AMI transmitter it is mandatory to connect a snubber circuit in parallel to the load.
Resistive load Resistive loads (max. 1 A) and control signals for PLC, impulse
pumps and so on can be connected without further measures
Actuators Actuators, like motor valves, are using both relays: One relay con-
tact is used for opening, the other for closing the valve, i.e. with the
2 relay contacts available, only one motor valve can be controlled.
Motors with loads bigger than 0.1 A must be controlled via external
power relays or an AMI relay box.
A
B
C
D
E
AC or DC power supply
AMI Transmitter
AMI Relay box
Snubber
Power relay coil
A
BC
DE
A
B
C
AMI transmitter
PLC or controlled pulse pump
Logic
AB
C
A
B
C
AC or DC power supply
AMI transmitter
Actuator
M
A
BC
Loading...