AD-DTR 100 GVF

Description

Application

Specific characteristics

Business data

Information

Technical specifications

Block and wiring diagram

Dimensions

CAD / CAE Daten

Modbus communication

The differential temperature controller DTR 100 GVF is designed for use in cooling systems for server cabinets or similar systems. With the help of this device system temperatures are regulated and therefore kept stable. The DTR 100 GVF takes two temperatures with the help of his two PT1000 sensor inputs and calculates the temperature difference to regulate the temperature with PI behavior. There are two analog outputs, with which an electric actuator with analog input can be controlled. No external 24V power supply must be set for the supply of this actuator because the DTR 100 GVF has an integrated short-circuit proof power supply for the supply of such an actuator. In addition, the controller includes digital signal inputs and relay outputs. Thus, digital states can be captured or redirected. Alternatively, a digital input can be used for the frequency measurement. Pulse of fans or pumps can be evaluated for speed detection. All analog values and digital states are available via Modbus RTU protocol. Connection of several devices on a bus is possible. This simplifies the monitoring of large installations significantly. For parameterization the DTR 100 GVF includes a front mounted control panel with color LCD screen.

AD-DTR 100 GVF

regulation of system temperatures in server cabinets or similar systems

2 PT1000 inputs
current and voltage output
4 digital inputs
2 relay outputs
RS485-bus
integrated 24 V DC power supply for external actuator
detachable screw terminals
LC-Display

Order number
AD-DTR 100 GVF

Downloads
Safety instructions	ad-safety-instructions.pdf (43 kB)

Temperature inputs
Measuring range	0 ... 120 °C
Sensor type	PT1000
Connection type	2-wire system (max. 20 m)
Resolution	12 Bit
Digital inputs
Nominal voltage	24 VDC
Max. voltage	30 VDC
Input resistance	Ca. 2 kOhm
Frequency input
Measuring range	1 Hz ... 10 kHz
Resolution	1 Hz
Input level	24 V DC (square-wave)
Max. input voltage	30 V DC
Output current
Output range	0/4 ... 20 mA
Max. burden	400 Ohm
Residual ripple	20 µAss
Resolution	12 Bit
Output voltage
Output range	0/2 ... 10 V
Min. burden	1 kOhm
Residual ripple	10 mVss
Resolution	12 Bit
Relay outputs
Maximum switching load AC	250 V, 2 A
Maximum switching load DC	50 V, 2 A
Contact construction	Potential-free changeover
Switching operations mechanical	10000000
At 230V/2A AC, cos(phi)=1	600000
At 230V/2A AC, cos(phi)=0,4	200000
At 24V/1 A DC	200000
RS485-Bus
Software protocol	Modbus-RTU
Preset data format	19200,e,8,1
Max. bus users	255
Bus termination	120 Ohm at both sides (not integrated)
Max. length of bus	500 m (no stubs)
Cable	Twisted and shielded
24 V DC output
Nominal voltage	24 V DC
Max. power delivery	3 W
Full load voltage	Ca. 23 V DC
Open-circuit voltage	Ca. 24,5 V DC
Residual ripple	Max. 100 mVss
Supply
Voltage range AC	230 V AC +/- 10%, 50/60 Hz
Nominal voltage AC	230 V AC
Power consumption AC	7 VA
Transmission behaviour
Basic accuracy	< 0,5 %
Temperature influence	100 ppm/K
Response time	~ 0,5 s
Housing
Dimensions (WxHxD)	30x110x134 mm
Type of protection	IP 20
Connection method	Detachable terminal clamp
Terminals, wire cross section	2,5 mm² flex wire / 4 mm² one wire
Bolting torque terminals	0,5 Nm
Weight	~ 250 g
Manner of fastening	35 mm DIN rail 35mm
Environmental conditions
Ambient temperature	-10 ... 60 °C
Storage and transport	-20 ... 70 °C (no condensation)
EMC
Product family standard	EN 61326 ¹⁾
Emitted interference	EN 55011, CISPR11 Cl. B
Electrical safety requirements
Product family standard	EN 61010-1
Overvoltage category	II
Pollution degree	2
Galvanic isolation, test voltages
Low voltage / relay output	4 kV, 50 Hz (1 min.)
Low voltage / power supply	4 kV, 50 Hz (1 min.)
Protection circuits
Input	Electrical surge protection
Output	Electrical surge protection
RS485-Bus	Electrical surge protection
Power supply	Protection against overvoltage, overcurrent and overtemperature

¹⁾ During checking, slight signal deviations are possible.

AD-DTR 100 GVF

AD-DTR 100 GVF

CAD model is not yet available for this product.

The CAD product overview can be found at: adamczewski.partcommunity.com

DOUT_RELAY_1

DOUT_RELAY_2

The DTR 100 GVF has a RS485 bus interface, on which the Modbus RTU protocol is used. On this bus interface all measured data can be read out .
The default standard data format is 19200,e,8,1. A change in another data format is possible any time. The Modbus data were adjusted for the use of the OMRON NB displays.

data rate: 19200 Baud (Bits/s)	parity: even	data bits: 8	stop bits: 1

The bus address is set by the product menu. Address 0 is not permitted for the bus operation. However, on this zero position the device always using the standard data format (19200, e, 8,1). The position 0 therefore represents a service position, can be used for example at incorrect parameterization.

The DTR 100 GVF supports two Modbus functions. These are the functions "Read Holding Registers" (0x03) and "Write Multiple Registers" (0x10) . The function "Read Holding Registers" data can be read from the device and data is written with "Write Multiple Registers" . The individual register width is 16 bits.

The following Modbus data are accessible via the RS485 bus:

start address	no. of registers	name	unit	data type	read	write

measurement values:

45801	2	OMRON_SCALED_AIN_TEMP_1	°C	7	1
45803	2	OMRON_SCALED_AIN_TEMP_2	°C	7	1
45805	2	OMRON_SCALED_TEMP_DIFF	K	7	1
45807	2	OMRON_SCALED_FREQ_DIN_1	Hz	7	1
45901	2	OMRON_SCALED_AOUT_VOLTAGE	V	7	1
45903	2	OMRON_SCALED_AOUT_PERCENT	%	7	1

digital signals:

parameters:

45101	2	OMRON_DATAPAR_FILTER		7	1	1
45103	2	OMRON_DATAPAR_TARGET_DIFF_TEMP	K	7	1	1
45105	2	OMRON_DATAPAR_PI_PROPORTIONAL_CONST	%/K	7	1	1
45107	2	OMRON_DATAPAR_PI_INTEGRAL_CONST	%/Ks	7	1	1
45109	2	OMRON_DATAPAR_PI_SAMPLING	s	7	1	1
45111	2	OMRON_DATAPAR_OFFSET	%	7	1	1
45113	2	OMRON_DATAPAR_ERROR_COOL	%	7	1	1
45115	2	OMRON_DATAPAR_ERROR_HEAT	%	7	1	1
45117	2	OMRON_DATAPAR_CONTRAST	%	7	1	1

status register:

42001	1	STATUS		3	1	0

In the 16-bit status register different states of the controller can be read.
Bit 0: Pt1000-sensor 1 cable break
Bit 1: Pt1000-sensor 1 short circuit
Bit 2: Pt1000-sensor 2 cable break
Bit 3: Pt1000-sensor 2 short circuit

Legend of the data types:

U08: 1	S08: 2	U16: 3	S16: 4	U32: 5	S32: 6	float: 7