CRD4510 Single Element, 2-Wire
Connection Diagram
LINE
LOAD
LOAD
LOAD
LOAD
SUPPLY
SUPPLY
SUPPLY
L3 L2 L1
L3 L2 L1
N
N
L2
L1
485
485
485
ASCII Simplified Programming Commands
A simplified data structure is used with only 6 commands required for full control of
the transducer. Commands are : Read Transducer Name, Read Configuration, Set
Configuration, Read Measurements, Read Energy Totalizer and Clear Energy
Totalizer. For illustration, the following commands are used to read data from a
CRD5170 3 Phase, 4 Wire Transducer with a device address of 00.
Command Transducer to Read Data: #00A<cr>
Transducers Response: >+[% FS Voltage
L1-N
]+[% FS Current
L1
]+[% FS
Voltage
L2-N
]+[% FS Current
L2
]+[% FS Voltage
L3-N
]+[% FS Current
L3
,][+/- % FS
Power][+/-% FS VARS][+/-Power Factor][Frequency]<cr>
Command Transducer to Read Energy Totalizer: #00W<cr>
Transducer Responds: 01[+/-KWHr]
{\[+/-KVHr][check sum]<cr>
Note: This is for illustration purposes only, See Applications Guides (Section I
for complete instructions.
SPECIFICATIONS
CRD485-232
RS485 to RS232 Converter Accessory
Connect PC to RS485 Bus
Basic Accuracy: .......................0.5%
Calibration: ..............................True RMS Sensing
Thermal Drift: ..........................500 PPM/°C
Operating Temperature
1
: ..........0°C to +60°C
Installation Category: ..............CAT II
Vibration Tested To: .................IEC 60068-2-6,1995
Pollution Degree: ....................2
Insulation Voltage: ..................2500 VDC
Altitude: ..................................2000 meter max
Frequency Range: .................20 Hz - 5 KHz
MTBF: ....................................Greater than 100K hours
Cleaning: ................................Water-dampened cloth
Supply Voltage
2
: ......................24 VDC ±10%
1) RH 5% to 95%, non-condensing 2) 0.4% max. ripple Vpp
3) Factory default settings: address 01, baud rate 9600, no parity,
Torque Specifications: ....................3.0 inch lbs (0.4Nm)
Response Time: .......................250 ms. max. 0-90% FS
Relative Humidity: ...............80% for temperatures up to
31°C and decreasing linearly to 50% at 40°C
Output Resolution: ..................................................16 bit
Transducer fanout on common bus: ...................64 max.
Baud Rate
3
: ...............1200, 2400, 4800, 9600,19.2K .bps
A/D Conversion Type: ..................4th order Delta Sigma
Device Address
3
: ............................................00 to FF
Data Format: .... .....................................................ASCII
Supply Current:..................Typical 30mA Max 30mA
Weight:.. ..............................................................0.5 lbs.
no flow control, 1 stop bit
