How it Works
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RTC103
User Manual
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Hach-Lange RTC103 User Manual

DOC023.52.90448

RTC103 N-Module

Real-Time Control System for Ammonium Removal

User manual
07/2013, Edition 1A
© HACH-LANGE GmbH 2013. All rights reserved. Printed in Germany.
Table of Contents
Section 2 General Information............................................................................................................... 9
2.1 Safety information............................................................................................................................... 9
2.1.1 Use of hazard information.......................................................................................................... 9
2.1.2 Precautionary labels .................................................................................................................. 9
2.2 Areas of application .......................................................................................................................... 10
2.3 Scope of delivery .............................................................................................................................. 10
2.4 Instrument overview.......................................................................................................................... 11
2.5 Theory of operation........................................................................................................................... 12
2.5.1 Theory of operation of the RTC103 N-Module......................................................................... 12
Section 3 Installation............................................................................................................................ 15
3.1 Installation of the RTC Module ......................................................................................................... 15
3.1.1 Power supply to the RTC module ............................................................................................15
3.2 Connection of process measuring instruments (for NH
3.2.1 Power supply of the sc sensors and the sc1000 controller...................................................... 15
3.3 Connecting the sc 1000 controller .................................................................................................... 16
3.4 Connection to the automation unit on the plant side.........................................................................16
-N, TSS and O2) ........................................ 15
4
Section 4 Parameterization and operation ......................................................................................... 21
4.1 Operating the sc controller................................................................................................................ 21
4.2 System setup .................................................................................................................................... 21
4.3 Menu structure.................................................................................................................................. 21
4.3.1 SENSOR STATUS................................................................................................................... 21
4.3.2 SYSTEM SETUP ..................................................................................................................... 21
4.4 1-Channel RTC103 N-Module parameterization on sc1000 controller............................................. 21
4.4.1 1-Channel RTC103 N-Module .................................................................................................22
4.4.2 1-Channel RTC103 N-Module Stages ..................................................................................... 26
4.4.3 1-Channel RTC103 N-Module VFD ......................................................................................... 29
4.5 2-channel RTC103 N-Module parameterization on the sc1000 controller........................................ 32
4.5.1 2-Channel RTC103 N-Module .................................................................................................33
4.5.2 2-Channel RTC103 N-Module Stages ..................................................................................... 37
4.5.3 2-Channel RTC103 N-Module VFD ......................................................................................... 40
4.6 Select sensors .................................................................................................................................. 45
4.7 Control programs .............................................................................................................................. 47
4.8 Automatic program change............................................................................................................... 47
3
Table of Contents
4.9 Explanations of nitrification controller parameters.............................................................................47
4.9.1 SRT MODE ..............................................................................................................................47
4.9.2 SRT (MANUALLY) ...................................................................................................................48
4.9.3 DAILY SURPLUS MASS..........................................................................................................48
4.9.4 COD-TKN RATIO .....................................................................................................................48
4.9.5 MIN NITRIFERS CONC. ..........................................................................................................48
4.9.6 MAX NITRIFERS CONC. .........................................................................................................48
4.9.7 MODEL CORRECTION FACT. ................................................................................................48
4.9.8 SUBSTIT. DO FOR MODEL ....................................................................................................48
4.9.9 NH4-N SETPOINT ...................................................................................................................48
4.9.10 P FAKT NH4 (only if NH4-N measurement in effluent is available for feed back control) ......48
4.9.11 INTEGRAL TIME NH4 (only if NH4-N measurement in effluent is available for feed back
control).........................................................................................................................................49
4.9.12 DERIVATIVE TIME NH4 (only if NH4-N measurement in effluent is available for feed back
control).........................................................................................................................................49
4.9.13 Min DO ...................................................................................................................................49
4.9.14 Max DO ..................................................................................................................................49
4.9.15 SMOOTHING .........................................................................................................................49
4.10 Explanations of DO CONTROL (For DO control option only) .........................................................49
4.10.1 P FAKT O2 (For VFD option only)..........................................................................................49
4.10.2 DERIVATIVE TIME ................................................................................................................49
4.10.3 INT PART...............................................................................................................................49
4.10.4 DAMPING...............................................................................................................................49
4.10.5 SUBST AERATION ................................................................................................................50
4.10.6 NUMBER OF STAGES ..........................................................................................................50
4.10.7 VFD P MIN (For DO control without VFD option this is fixed to 100%)..................................50
4.11 INPUTS ...........................................................................................................................................50
4.11.1 MIN INFLOW..........................................................................................................................50
4.11.2 MAX INFLOW.........................................................................................................................50
4.11.3 0/4 to 20mA............................................................................................................................50
4.11.4 MIN RECIRCULATION ..........................................................................................................50
4.11.5 MAX RECIRCULATION .........................................................................................................50
4.11.6 0/4 to 20mA............................................................................................................................50
4.11.7 Q RECI RATIO.......................................................................................................................50
4.11.8 MIN RETURN SLUDGE .........................................................................................................51
4.11.9 MAX RETURN SLUDGE........................................................................................................51
4.11.10 0/4 to 20mA..........................................................................................................................51
4.11.11 Q RETURN RATIO...............................................................................................................51
4.12 OUTPUTS .......................................................................................................................................51
4.12.1 MIN DO SETTING (only for option without DO control) .........................................................51
4.12.2 MAX DO SETTING (only for option without DO control)........................................................51
4.12.3 0/4 to 20mA............................................................................................................................51
4
Table of Contents
4.13 Volume............................................................................................................................................ 51
4.13.1 Aerated volume...................................................................................................................... 51
4.14 MODBUS ........................................................................................................................................ 51
4.14.1 ADDRESS.............................................................................................................................. 51
4.14.2 DATAORDER ........................................................................................................................ 51
4.15 Displayed measurement values and variables ............................................................................... 52
Section 5 Maintenance ......................................................................................................................... 53
5.1 Maintenance schedule...................................................................................................................... 53
Section 6 Troubleshooting................................................................................................................... 55
6.1 Error messages ................................................................................................................................ 55
6.2 Warnings........................................................................................................................................... 55
6.3 Wear parts ........................................................................................................................................ 55
Section 7 Replacement parts and accessories .................................................................................. 57
7.1 Replacement Parts ........................................................................................................................... 57
Section 8 Contact information ............................................................................................................ 59
Section 9 Warranty and liability........................................................................................................... 61
Appendix A MODBUS address setting ............................................................................................... 63
Index ...................................................................................................................................................... 65
5
Table of Contents
6

Section 1 Technical data

These are subject to change without notice.
Embedded PC (compact industrial PC)
Processor
Flash memory 2 GB compact flash card
Internal working memory 256 MB DDR-RAM (not expandable)
Interfaces 1× RJ 45 (Ethernet), 10/100 Mbit/s
Diagnostic LED
Expansion slot 1× CompactFlash type II slot with ejector mechanism
Clock
Operating system Microsoft Windows
Control software TwinCAT PLC Runtime or TwinCAT NC PTP Runtime
System bus 16 bit ISA (PC/104 standard)
Power supply Via system bus (through power supply module CX1100-0002)
Max. power loss 6 W (including the system interfaces CX1010-N0xx)
Equipment properties
Dimensions (L × W × H)
Weight Approximately 0.9 kg (1.98 lb)
Pentium®1, MMX compatible, 500 MHz clock rate
1× power, 1× LAN speed, 1× LAN activity, TC status, 1× flash access
Internal, battery-buffered clock for time and date (battery can be replaced)
®2
CE or Microsoft Windows Embedded Standard
350 mm × 120 mm × 96 mm (13.78 in. × 4.72 in. × 3.78 in.)
Analog input 0/4 to 20 mA for flow rate measurement
Internal resistance 80 ohm + diode voltage 0.7 V
Signal current 0 to 20 mA
Common mode voltage (U
Measurement error (for entire measurement range)
Electrical surge resistance 35 V DC
Electrical isolation 500 V
Digital outputs Aeration and alarm activation
Number of outputs 2 (KL2032), 4 (KL2134), 8 (KL2408), 16 (KL2809)
Nominal load voltage 24 V DC (–15 % / +20 %)
Load type ohmic, inductive lamp load
Max. output current 0.5 A (short-circuit proof) per channel
Reverse polarity protection Yes
Electrical isolation 500 V
  
) 35 V max.
CM
< ± 0.3 % (from measurement range end value)
(K-bus/signal voltage)
eff
(K-bus/field voltage)
eff
7
Technical data
Analog output Outputs for DO setpoint or VFD control
Number of outputs
Supply voltage
Signal current 0/4 to 20 mA
Working resistance < 500 Ohm
Measurement error
Resolution 12 bit
Conversion time Approximately 1.5 ms
One-channel: 1 (KL4011); 1 (KL4012) VFD control Two-channel: 1 (KL4012); 2 (KL4012) VFD control
24 V DC via the power contacts (Alternatively, 15 V DC with bus termination KL9515)
± 0.5 LSB linearity error ± 0.5 LSB offset error ± 0.5 % (relative to the measuring range end value)
Electrical isolation 500 V
(K-bus/field voltage)
eff
Environmental conditions
Working temperature 0 to 50 °C (32 to 122 °F)
Storage temperature –25 to +85 °C (–13 to 185 °F)
Relative humidity 95 %, non-condensing
Miscellaneous
Pollution degree Protection class Installation category Maximum altitude
3 III I 2000 m (6.562 ft.)
Degree of protection IP20
Installation DIN rail EN 50022 35 × 15
1
Pentium is a registered trademark of the Intel Corporation.
2
Microsoft Windows is a brand name for operating systems of the Microsoft Corporation.
8

Section 2 General Information

2.1 Safety information

Please read this entire manual before unpacking, setting up, or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment.
To prevent damage to or impairment of the device's protection equipment, the device may only be used or installed as described in this manual.

2.1.1 Use of hazard information

DANGER
Indicates a potentially or imminently hazardous situation that, if not avoided, can result in death or serious injury.
WARNING
Indicates a potentially or imminently dangerous situation that, if it is not avoided, can lead to death or to serious injuries.
CAUTION
Indicates a possible dangerous situation that can have minor or moderate injuries as the result.
Indicates a situation that, if it is not avoided, can lead to damage to the device. Information that requires special emphasis.
Note: Information that supplements points in the main text.

2.1.2 Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed.
This symbol is a warning triangle. Follow all safety notes that follow this symbol to prevent possible injuries. If this symbol is located on the device, it refers to information in the operating- and/or safety notes of the user manual.
This symbol can be attached to a housing or a barrier in the product and shows that electric shock risk and/or the risk of a death through electric shock exists.
Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal systems after 12 August 2005. In conformity with European local and national regulations, European electrical equipment users must now return old or end-of life equipment to the manufacturer for disposal at no charge to the user.
Note: You obtain instructions on the correct disposal of all (marked and not marked) electrical products that were supplied or manufactured by Hach-Lange at your relevant Hach-Lange sales office.
NOTICE
CAUTION
The manufacturer is not responsible for any damages due to misapplication or misuse of this product including, without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent permitted under applicable law. The user is solely responsible to identify critical application risks and install appropriate mechanisms to protect processes during a possible equipment malfunction.
9
General Information

2.2 Areas of application

The RTC103 N-Module is an universally applicable control unit which optimizes nitrification processes in wastewater treatment plants. In addition, the RTC103 N-Module can optionally be equipped with a closed-loop controller for setting the dissolved oxygen concentration (O module controls one activated sludge tank. The two-channel version controls two activated sludge tanks simultaneously.
The use of an RTC module (Real-Time Controller) does not release the operator from the responsibility of maintaining the system.
In particular, the operator must make sure that instruments connected to the RTC open/closed-loop controller are always fully functional.
To make sure these instruments supply correct, reliable measurement values, regular maintenance work (for example, cleaning of the sensors and laboratory comparative measurements) is essential! (Refer to the user manual for the relevant instrument.)

2.3 Scope of delivery

The combination of pre-assembled components supplied by the manufacturer does not represent a standalone functional unit. In accordance with EU guidelines, this combination of pre-assembled components is not supplied with a CE mark, and there is no EU declaration of conformity for the combination.
However, the conformity of the combination of components with the guideline can be proved through technical measurements.
) in the activated sludge tank. The single-channel version of the RTC
2
NOTICE
NOTICE
Each RTC103 N-Module is supplied with:
• A SUB-D connector (9 pin)
• Ferrite core, foldable
• User manual
Check that the order is complete. All listed components must be present. If anything is missing or damaged, contact the manufacturer or distributor immediately.
10

2.4 Instrument overview

Figure 1 Base module RTC 100-240 V version
General Information
1 L(+) 7 Automatic circuit breaker (ON/OFF switch for item 10
and 11 without fuse function)
2 N(–) 8 sc 1000 connection: RS485 (CX1010-N041) 3 Input AVC 100–240 V / Input DC 95–250 V 9 Battery compartment 4 PE (protective earth) 10 CPU base module, consisting of Ethernet port with
battery compartment (CX1010-N000), CPU module with CF card (CX1010-0021) and passive aeration element.
5 24 V transformer (Specifications refer section 3.1.1,
page 15)
6 Output DC 24 V, 0.75 A
Note: All components are pre-wired.
11 Power supply module, consisting of bus coupler
(CX1100-0002) and terminal module 24V.
11
General Information
2
1
Figure 2 Design of the analog and digital input and output modules
1 Analog or digital input or output module
or bus termination module
Note: The number of LEDs indicates the number of channels.
2 LED area with installed LEDs or free LED installation
spaces.

2.5 Theory of operation

2.5.1 Theory of operation of the RTC103 N-Module

The RTC103 N-Module (Real-Time Controller for Nitrification) optimises nitrification processes in waste water treatment plants which are continuously aerated (e.g. plug flow nitrification tanks or pre-denitrification).
The RTC103 N-Module consists of an open-loop controller, based on NH concentration, flow rate, and the temperature in the aeration tank. Optionally, the Total Suspended Solids concentration in the aeration tank (MLSS) can be taken into account.
Based on that information, a DO set-point is calculated which is required to reach the desired NH control, there is also a closed-loop PID based on the NH the nitrification zone that can be applied to improve control performance. The PID-output values are combined with the open-loop output to calculate the required DO set point (Figure 3).
-N set-point at the effluent of the aeration tank. In addition to open-loop
4
-N influent
4
-N concentration at the end of
4
12
Figure 3 Principle operation mode of RTC103 N-Module
General Information
Basic RTC103 N-Module
For each lane the calculated DO set point is delivered either by analog output or via the sc1000 ProfiBus communication card to the PLC. The DO control algorithm has to be implemented on the PLC.
Option 2: RTC103 N-Module with DO aeration stages controller
The RTC103 N-Module is equipped with an additional DO controller adjusting the aeration intensity to reach the calculated DO concentration. The DO control can have up to 6 different aeration stages per channel (e.g. in order to activate blower or activate discrete aeration intensities). These aeration stages are activated by a min limit DO concentration and the calculated DO set-point.
Option 3: RTC103 N-Module with analog DO controller
The RTC103 N-Module is equipped with an additional DO controller which, using 6 different aeration stages, adjusts the aeration intensity to reach the calculated DO concentration. This option has two analog outputs per lane, to control up to two variable speed drive blowers per lane.
All the above options for the RTC103 N-Module are available as single-channel (for control of one lane) or dual-channel (for control of two lanes).
13
General Information
14

Section 3 Installation

Only qualified experts may perform the tasks described in this section of the manual, while adhering to all locally valid safety regulations.
Always lay cables and hoses so that they are straight and do not pose a tripping hazard.
Before switching on the power supply, you must refer to the instructions in the relevant operating manuals.

3.1 Installation of the RTC Module

Only install the RTC Module on a DIN rail. The module must be attached horizontally, with at least 30 mm (1.2 in.) space at the top and bottom to make sure that the passive aeration element can function correctly.
When used indoors, the RTC Module must be installed in a control cabinet. When used outdoors, the RTC Module requires a suitable enclosure that supplies the following technical specifications (see Section 1 Technical data, page 7).
DANGER
CAUTION
CAUTION
The RTC Module is only operated via the sc1000 controller (see the user manual for the sc1000 controller).
Note: The software version of the sc1000 controller must be V3.20 or above.

3.1.1 Power supply to the RTC module

WARNING
Alternating current may destroy the direct current system and therefore jeopardize user safety. Never connect an alternating current voltage to the 24 V direct current model.
Table 1 Supply voltage of the RTC Module
Voltage 24 V DC (–15 % / +20 %), max. 25 W Recommended fuse C2 With 110–230 V option 230 V, 50–60 Hz, approximately 25 VA
Note: An external deactivation switch is recommended for all installations.
3.2 Connection of process measuring instruments (for NH4-N, TSS and O
)
2
The measurement signals of the sc sensors for measuring NH4-N, TSS, Dissolved Oxygen and Temperature (e.g. AMTAX sc, AN-ISE sc, AISE sc, SOLITAX sc, LDO2 sc,...) are supplied to the RTC module via the RTC communication card (YAB117) in the sc1000.

3.2.1 Power supply of the sc sensors and the sc1000 controller

See operating instructions of the respective sc sensors and the sc1000 controller.
15
Installation

3.3 Connecting the sc 1000 controller

The supplied SUB-D connector is attached to a two-wire, shielded data cable (signal or bus cable). For additional information regarding the data cable connection, refer to the enclosed assembly instructions.

3.4 Connection to the automation unit on the plant side

Depending on the variant (1-channel or 2-channel RTC103 N-Module, with or without DO control) the RTC103 N-Module is equipped with various components that have to be connected to the automation unit of the plant:
Output signals from RTC103 N-Module:
Basic For each lane, a single DO set-point 0/4 to 20 mA or ProfiBus / ModBus via
sc1000 communication card
Option 2 For each lane, Aeration intensity (1 to 6 stages) for the aeration system
(0/24 V per stage or ProfiBus / MODBUS) via sc1000 communication card
Option 3 For each lane, 2 additional analog outputs (0/4 to 20 mA or ProfiBus /
MODBUS) via sc1000 communication card
Input signals to RTC103 N-module:
• Flow rate, overall wastewater (Q_in, 0/4 to 20 mA)
• IRC flow rate input (Q_IRC, 0/4 to 20 mA)
or IRC flow = C1 * Q_in with minimum and maximum values
• RAS flow rate (Q_RAS 0/4 to 20 mA) or RAS flow = C2 * Q_in with minimum and maximum values
Note: 0/4 to 20 mA input can be used either for Q_IRC or for Q_RAS. The other value has to be calculated (C*Q_xxx with minimum and maximum values).
Input signals from sc1000 via RTC communication card to RTC103 N-module
• Common or individual NH4-N – concentration inlet aeration
(Measuring points: 1. Inflow 2. Settled Sewage and RAS Mixing / Distribution Chamber 3. aeration tank after IRC input)
• Common or individual NH4-N – concentrations at the end of each lane
• DO concentration for each lane
• TSS concentration aeration tank (option)
• Temperature (coming from a connected sensor DO or NH
Main Input parameters:
, or via analog input card)
4
16
• Parameters for open-loop control
• Parameters for PID control (closed-loop)
• Min/max DO concentration, max. rate of change
• Control parameters for DO control
Installation
1-Channel RTC103 N-Module
Module Name Terminal Signal Channel Function
2 fold digital output
1
KL2032
1 fold analog output KL4011 1 - 3 0/4 to 20 mA Output DO set point 1 fold analog intput KL3011 1 - 2 0/4 to 20 mA Flow rate aeration lane 1 fold analog input KL3011 1 - 2 0/4 to 20 mA Flow rate internal recirculation or return sludge Bus termination KL9010 Bus termination
1
Ground Connector 3 and 7, 24 V Connector 6.
2-Channel RTC103 N-Module
Module Name Terminal Signal Channel Function
4 fold digital output1KL2134
2 fold analog output KL4012
1 fold analog intput KL3011 1 - 2 0/4 to 20 mA 1 Flow rate aeration lane 1
1 fold analog input KL3011 1 - 2 0/4 to 20 mA 2
1 fold analog intput KL3011 1 - 2 0/4 to 20 mA 1 Flow rate aeration lane 2
1 fold analog input KL3011 1 - 2 0/4 to 20 mA 2
Bus termination KL9010 Bus termination
1 +24 V/0 V Input Signals ok (24V), Input signal faulty (0V) 5 +24 V/0 V RTC operating (24V), RTC failure (0V)
1 +24 V/0 V 1 Input Signals ok (24V), Input signal faulty (0V) 5 +24 V/0 V 1 RTC operating (24V), RTC failure (0V) 4 +24 V/0 V 2 Input Signals ok (24V), Input signal faulty (0V) 8 +24 V/0 V 2 RTC operating (24V), RTC failure (0V) 1 - 3 0/4 to 20 mA 1 Output DO set point lane 1 5 - 7 0/4 to 20 mA 2 Output DO set point lane 2
Flow rate internal recirculation or return sludge lane 1
Flow rate internal recirculation or return sludge lane 2
1
Ground Connector 3 and 7, 24 V Connector 6.
1-Channel RTC103 N-Module DO aeration stages control
Module Name Terminal Signal Channel Function
1 +24 V/0 V Input Signals ok (24V), Input signal faulty (0V) 2 +24 V/0 V Aeration step 1 ON / OFF 3 +24 V/0 V Aeration step 2 ON / OFF
8 fold digital output
1
KL2408
4 +24 V/0 V Aeration step 3 ON / OFF 5 +24 V/0 V Aeration step 4 ON / OFF 6 +24 V/0 V Aeration step 5 ON / OFF 7 +24 V/0 V Aeration step 6 ON / OFF
8 +24 V/0 V RTC operating (24V), RTC failure (0V) 1 fold analog output KL4011 1 - 3 0/4 to 20 mA Output DO set point 1 fold analog intput KL3011 1 - 2 0/4 to 20 mA Flow rate aeration lane 1 fold analog input KL3011 1 - 2 0/4 to 20 mA Flow rate internal recirculation or return sludge Bus termination KL9010 Bus termination
1
Ground Connector 3 and 7, 24 V Connector 6.
17
Installation
2-Channel RTC103 N-Module DO aeration stages control
Module Name Terminal Signal Channel Function
1 +24 V/0 V 1 Input Signals ok (24V), Input signal faulty (0V) 2 +24 V/0 V 1 Aeration step 1 ON / OFF 3 +24 V/0 V 1 Aeration step 2 ON / OFF 4 +24 V/0 V 1 Aeration step 3 ON / OFF 5 +24 V/0 V 1 Aeration step 4 ON / OFF 6 +24 V/0 V 1 Aeration step 5 ON / OFF 7 +24 V/0 V Aeration step 6 ON / OFF
16 fold digital output1KL2809
2 fold analog output KL4012
1 fold analog intput KL3011 1 - 2 0/4 to 20 mA 1 Flow rate aeration lane 1
1 fold analog input KL3011 1 - 2 0/4 to 20 mA 2
1 fold analog intput KL3011 1 - 2 0/4 to 20 mA 1 Flow rate aeration lane 2
1 fold analog input KL3011 1 - 2 0/4 to 20 mA 2
Bus termination KL9010 Bus termination
8 +24 V/0 V RTC Channel 1 operating (24V), RTC failure (0V) 9 +24 V/0 V 2 Input Signals ok (24V), Input signal faulty (0V) 10 +24 V/0 V 2 Aeration step 1 ON / OFF 11 +24 V/0 V 2 Aeration step 2 ON / OFF 12 +24 V/0 V 2 Aeration step 3 ON / OFF 13 +24 V/0 V 2 Aeration step 4 ON / OFF 14 +24 V/0 V 2 Aeration step 5 ON / OFF 15 +24 V/0 V Aeration step 6 ON / OFF 16 +24 V/0 V RTC Channel 2 operating (24V), RTC failure (0V) 1 - 3 0/4 to 20 mA 1 Output DO set point lane 1 5 - 7 0/4 to 20 mA 2 Output DO set point lane 2
Flow rate internal recirculation or return sludge lane 1
Flow rate internal recirculation or return sludge lane 2
1
Ground Connector 3 and 7, 24 V Connector 6.
1-Channel RTC103 N-Module connectors DO aeration stages / analog control
Module Name Terminal Signal Channel Function
1 +24 V/0 V Input Signals ok (24V), Input signal faulty (0V) 2 +24 V/0 V Aeration step 1 ON / OFF (VFD) 3 +24 V/0 V Aeration step 2 ON / OFF (VFD)
8 fold digital output
1
KL2408
4 +24 V/0 V Aeration step 3 ON / OFF 5 +24 V/0 V Aeration step 4 ON / OFF 6 +24 V/0 V Aeration step 5 ON / OFF 7 +24 V/0 V Aeration step 6 ON / OFF 8 +24 V/0 V RTC operating (24V), RTC failure (0V)
2 fold analog output KL4012
1 - 3 0/4 to 20 mA Output 1 VFD for DO control
5 - 7 0/4 to 20 mA Output 2 VFD for DO control 1 fold analog intput KL3011 1 - 2 0/4 to 20 mA Flow rate aeration lane 1 fold analog input KL3011 1 - 2 0/4 to 20 mA Flow rate internal recirculation Bus termination KL9010 Bus termination
1
Ground Connector 3 and 7, 24 V Connector 6.
18
2-Channel RTC103 N-Module connectors DO aeration stages / analog control
Module Name Terminal Signal Channel Function
1 +24 V/0 V 1 Input Signals ok (24V), Input signal faulty (0V) 2 +24 V/0 V 1 Aeration step 1 ON / OFF (VFD) 3 +24 V/0 V 1 Aeration step 2 ON / OFF (VFD) 4 +24 V/0 V 1 Aeration step 3 ON / OFF 5 +24 V/0 V 1 Aeration step 4 ON / OFF 6 +24 V/0 V 1 Aeration step 5 ON / OFF 7 +24 V/0 V 1 Aeration step 6 ON / OFF
16 fold digital output1KL2809
2 fold analog output KL4012
2 fold analog output KL4012
1 fold analog intput KL3011 1 - 2 0/4 to 20 mA 1 Flow rate aeration lane 1 fold analog input KL3011 1 - 2 0/4 to 20 mA 1 Flow rate internal recirculation 1 fold analog intput KL3011 1 - 2 0/4 to 20 mA 2 Flow rate aeration lane 1 fold analog input KL3011 1 - 2 0/4 to 20 mA 2 Flow rate internal recirculation Bus termination KL9010 Bus termination
8 +24 V/0 V 1 RTC Channel 1 operating (24V), RTC failure (0V) 9 +24 V/0 V 2 Input Signals ok (24V), Input signal faulty (0V) 10 +24 V/0 V 2 Aeration step 1 ON / OFF (VFD) 11 +24 V/0 V 2 Aeration step 2 ON / OFF (VFD) 12 +24 V/0 V 2 Aeration step 3 ON / OFF 13 +24 V/0 V 2 Aeration step 4 ON / OFF 14 +24 V/0 V 2 Aeration step 5 ON / OFF 15 +24 V/0 V 2 Aeration step 6 ON / OFF 16 +24 V/0 V 2 RTC Channel 2 operating (24V), RTC failure (0V)
0/4 to 20 mA 1 Output 1 VFD for DO control 0/4 to 20 mA 1 Output 2 VFD for DO control 0/4 to 20 mA 2 Output 1 VFD for DO control 0/4 to 20 mA 2 Output 2 VFD for DO control
Installation
1
Ground Connector 3 and 7, 24 V Connector 6.
19
Installation
20
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