sauter RDT 921 F901,RDT 940 F901 Hardware Manual
Sauter Italia S.p.A.
RDT 921 F901
Configurable controllers
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
Hardware manual | ENGLISH
Code 114RDT921E104SAU
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Important
Read this document thoroughly before installation and before
use of the device and follow all recommendations; keep this
document with the device for future consultation.
Only use the device in the way described in this document; do
not use the same as a safety device.
Disposal
The device must be disposed of in compliance with local
standards regarding the collection of electric and electronic
equipment.
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
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Index
1
1.1
2
2.1
3
3.1
3.2
3.3
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
5.1
5.2
6
6.1
6.2
6.3
7
7.1
INTRODUCTION ............................................... 5
Introduction .................................................... 5
DESCRIPTION ................................................. 6
Description ..................................................... 6
DIMENSIONS AND INSTALLATION ..................... 7
Dimensions: .................................................... 7
Installation...................................................... 7
Installation warnings ........................................ 8
ELECTRIC CONNECTION ................................... 9
Connectors ..................................................... 9
Meaning of connectors ...................................... 9
Insertion of the termination resistor of the CAN
CANBUS port ................................................. 13
Insertion of the RS-485 MODBUS master/slave
port termination resistor ................................. 13
Insertion of the RS-485 MODBUS slave port
termination resistor ........................................ 13
RS-485 MODBUS master/slave port polarisation 13
RS-485 MODBUS slave port polarisation ........... 13
Example of electric connection ......................... 14
Warnings for the electric connection ................. 14
USER INTERFACE ........................................... 15
Keypad ......................................................... 15
LED warning lights ......................................... 15
CONFIGURATION ........................................... 17
Configuration of a built-in LCD controller .......... 17
Configuration of a controller through a remote
user interface ................................................ 18
List of configuration parameters ...................... 20
TECHNICAL DATA .......................................... 31
Technical data ............................................... 31
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
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RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
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RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
1 INTRODUCTION
1.1 Introduction
RDT900 is a range of configurable controllers for cooling and
air conditioning applications.
The controllers are equipped with a significant number of input
and output arrangements which make it possible to create a
flexible, modular and expandable network of control devices.
The range of available communication ports ( RS-485, CAN,
USB and Ethernet) and of supported communication protocols
promote the integration of the devices into larger systems.
For information on the use of the BACnet communication
protocol please consult the PICS.
The actual version implements a BACnet® standardized device
profile B-ASC, which doesn’t require the managing of
Scheduler and Calendar objects, instead required for the B-
AAC profile.
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2 DESCRIPTION
2.1 Description
The following drawing shows the appearance of the devices.
The following table shows the meaning of the parts of the devices.
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
PART MEANING
1 K1 and K2 digital outputs
2 K3, K4, K5 and K6 digital outputs
3 K7 digital outputs
4 Ethernet MODBUS TCP, Web Server, BACnet IP port
5 display and keypad (not available for the blind versions)
6 digital inputs
7 analog outputs
8 USB port
9 analog inputs
10
micro switch activating the Can Canbus terminal port, the RS-485 MODBUS master/slave port and the RS-485 MODBUS
slave port
11 RS-485 MODBUS slave, RS-485 MODBUS master/slave and CAN CANBUS ports
12 power supply
13 signalling LED
For additional information, please refer to the following chapters.
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RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
3 DIMENSIONS AND INSTALLATION
3.1 Dimensions:
The following drawing shows the measurements of the devices (8 DIN modules), in mm (in).
3.2 Installation
The device is installed on a DIN 35.0 x 7.5 mm (1.377 x 0.295 in) or 35.0 x 15.0 mm (1.377 x 0.590 in), track in a control panel.
To install the devices, please follow the instructions in the drawing below.
1
2
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To remove the devices, first remove any screw-in removable terminal boards mounted in the lower part, then trigger the DIN track clip
with a screwdriver as show in the following picture:
3
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
4
To install the devices again, first press the clip of the DIN track.
3.3 Installation warnings
-
-
-
make sure that the device work conditions (temperature of use, humidity, etc.) lie within the limits indicated; see chapter 7
“TECHNICAL DATA”
do not install the device near to any heat sources (heating elements, hot air ducts etc.), equipment containing powerful
magnets (large diffusers, etc.), areas affected by direct sunlight, rain, humidity, excessive dust, mechanical vibrations or
shocks
in compliance with Safety Standards, the device must be installed correctly and in a way to protect against any contact with
electric parts; all parts that ensure protection must be fixed in a way that they cannot be removed without the use of tools.
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RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
4 ELECTRIC CONNECTION
4.1 Connectors
The following drawing shows the connectors of the devices.
4.2 Meaning of connectors
The following tables show the meaning of the various device connectors.
For additional information, please read chapter 7 "TECHNICAL DATA",
POWER
Device power supply (24 VAC/DC not insulated)
If the device runs on direct current, it shall be necessary to pay attention to the polarity of the supply voltage.
If the device is connected to a network of devices, it shall be necessary to:
-
-
check that the power supply of the devices included in the network are galvanically isolated.
the phase powering the device is the same as that of all the devices included in the network.
PART MEANING
device power supply:
AC/+
AC/-
ANALOG INPUTS
Analog inputs
Please see paragraph 6 "CONFIGURATION" for the settings of the analog inputs.
PART MEANING
GND analog inputs ground
AI1
-
-
device power supply:
-
-
analog input 1 settable by way of the PTC, NTC, Pt 1000, Ni 1000 probes configuration parameter, transducers 0-20 mA,
4-20 mA, 0-5 V ratiometric or 0-10 V
if the device is run by alternating current, connect the phase
if the device is run by direct current, connect the positive pole
if the device is run by alternating current, connect the neuter
if the device is run by direct current, connect the negative pole
AI2
analog input 2 settable by way of the PTC, NTC, Pt 1000, Ni 1000 probes configuration parameter, transducers 0-20 mA,
4-20 mA, 0-5 V ratiometric o 0-10 V
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RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
AI3
AI4 analog input 4, settable by way of the PTC, NTC, Pt 1000, Ni 1000 probes configuration parameter
AI5 analog input 5, settable by way of the PTC, NTC, Pt 1000, Ni 1000 probes configuration parameter
AI6 analog input 6, settable by way of the PTC, NTC, Pt 1000, Ni 1000 probes configuration parameter
GND analog inputs ground
+5V 0-5 V (5VDC) ratiometric transducers power supply
+24V 0-20 mA, 4-20 mA and 0-10 V (24 VAC) transducers power supply
DIGITAL INPUTS
Digital inputs.
PART MEANING
DI1 digital input 1 (24 VAC/DC, 50/60 Hz or 2 KHz opto-isolated);
analog input 3 settable by way of the PTC, NTC, Pt 1000, Ni 1000 probes configuration parameter, transducers 0-20 mA,
4-20 mA, 0-5 V ratiometric o 0-10 V
DI2 digital input 2 (24 VAC/DC, 50/60 Hz o 2 KHz opto-isolated);
DI3 digital input 3 (24 VAC/DC, 50/60 Hz opto-isolated)
DI4 digital input 4 (24 VAC/DC, 50/60 Hz opto-isolated)
DI5 digital input 5 (24 VAC/DC, 50/60 Hz opto-isolated)
COM common digital inputs
ANALOG OUTPUTS
Analog outputs.
Please see paragraph 6 "CONFIGURATION" for the settings of the analog outputs.
PART MEANING
GND analog outputs ground
AO1 analog output 1, settable by way of the configuration parameter for PWM or 0-10V.
AO2 analog output 2, settable by way of the configuration parameter for PWM or 0-10 V
AO3 analog output 3, settable by way of the configuration parameter for 0-20 mA, 4-20 mA or 0-10 V
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DIGITAL OUTPUTS
Digital outputs.
PART MEANING
CO1 common digital output 1
NO1
CO2 common digital output 1
NO2
usually open contact for digital output 1
according to model:
-
-
usually open contact for digital output 2
according to model:
-
-
electromechanical relay with 3 A res. @ 250 VAC
control for 24 VAC/DC, 600 mA max. solid state relays
electromechanical relay with 3 A res. @ 250 VAC
control for 24 VAC/DC, 600 mA max. solid state relays
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
CO3-6 common digital output 3... 6
NO3 usually open contact for digital output 3 (electromechanical relay with 3 A res. @ 250 VAC)
NO4 usually open contact for digital output 4 (electromechanical relay with 3 A res. @ 250 VAC)
NO5 usually open contact for digital output 5 (electromechanical relay with 3 A res. @ 250 VAC)
NO6 usually open contact for digital output 6 (electromechanical relay with 3 A res. @ 250 VAC)
CO7 common digital output 7
NO7 usually open contact for digital output 7 (electromechanical relay with 3 A res. @ 250 VAC)
NC7 usually open contact for digital output 7
CAN/RS-485
RS-485 MODBUS slave, RS-485 MODBUS master/slave and CAN CANBUS ports
The communication protocol for the RS-485 MODBUS master/slave port can be set with the development environment.
For the settings for the RS-485 MODBUS slave, RS-485 MODBUS master/slave and CAN CANBUS ports, please refer to chapter 6
“CONFIGURATION”.
PART MEANING
CAN+ CAN CANBUS port positive pole
CAN- CAN CANBUS port negative pole
GND RS-485 MODBUS slave, RS-485 MODBUS master/slave and CAN CANBUS ports ground
A1/+ RS-485 MODBUS master/slave port positive pole
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B1/- RS-485 MODBUS master/slave port negative pole
A2/+ RS-485 MODBUS slave port positive pole
B2/- RS-485 MODBUS slave port negative pole
The following table shows the Function codes supported by the device, provided that it works in commander mode with a MODBUS
communication protocol.
RDT921F901 | Hardware manual ver. 1.0 | Code 114RDT921E104SAU
FUNCT.
CODE
FC 01 read coils
FC 02 read discrete inputs
FC 03 read multiple registers
FC 04 read input registers
FC 05 write single coil
FC 06 write single register
FC 08 diagnostic
FC 15 write multiple coils
FC 16 write multiple registers
MEANING
FC 23 read write multiple registers (maximum 10 registers)
The RS-485 MODBUS slave and RS-485 MODBUS master/slave ports can be used for one of the following operations:
-
-
-
The CAN CANBUS port can be used to connect the device to the remote user interfaces of the RDB900 range
The maximum number of devices that can be comprised in the CAN network (32) depends on the BUS load; the BUS load, in turn,
depends on the baud rate of the CANBUS communication and on the type of device (for instance, a CAN network can comprise 1
controller and 4 remote user interfaces with a baud rate of 500,000 baud).
USB
USB port
Through the USB port it is possible to carry out one of the following actions:
-
-
-
-
-
Please see paragraph 6 "CONFIGURATION" for the settings of the USB port.
device configuration (through the Parameters Manager set-up software system)
device supervision (through the Sauter Vision Center system monitoring and supervision (via Web) system)
MODBUS master function use with regard to other slave devices.
upload and download of application software (through the development environment or USB flash drive)
application software debug (through development environment)
device configuration (through the Parameters Manager set-up software system or a USB flash drive)
file transfer (through the development environment)
data logging (through a USB flash drive).
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