2010-09-24
5012602300
C0
-2L
..
..
DVP-1071070-01
………………………………………………………………… ENGLISH …………………………………………………………………
Thank you for choosing Delta’s DVP series PLC. Delta releases DVP02LC-SL load cell
module of weight measurement function. DVP02LC-SL provides 24-bit resolution
applicable for 4-wire or 6-wire load cells with various eigenvalues. Therefore, the
response time can be adjusted in coordination with each other according to users’ needs.
On this basis, the market requirements on weight measurement can easily be met.
a This instruction sheet provides introductory information on electrical specifications,
general specifications, installation and wiring.
a This is an OPEN TYPE I/O module and therefore should be installed in an enclosure
free of airborne dust, humidity, electric shock and vibration. The enclosure should
prevent non-maintenance staff from operating the device (e.g. key or specific tools
are required to open the enclosure) in case danger and damage on the device may
occur.
a DO NOT connect the input AC power supply to any of the I/O terminals; otherwise
serious damage may occur. Check all the wiring again before switching on the power.
Make sure the ground terminal is correctly grounded in order to prevent
electromagnetic interference.
a The tightening torque for I/O terminal block is 1.95 kg-cm (1.7 in-lbs). Use 60/75°C
copper conductors only.
Product Profile & Dimensions
3 mm
DVP02LC
POWER
EXC+
RUN
EXC-
ERROR
SIG+
L.V
CH1
SIG-
SEN+
SEN-
NET
SHD
ZERO
MAX
MOTION
EXC+
90 mm
EXC-
SIG+
CH2
SIG-
NET
SEN+
ZERO
SEN-
MAX
SHD
MOTION
60 mm
33 mm
1. Mounting hole of the I/O module 2. DIN rail mounting slot (35mm)
3. I/O module connection port 4. I/O module clip
Status indicator
5.
(POWER, RUN, ERROR and L.V)
Function status indicator
6.
(NET, ZERO, MAX, MOTION)
7. I/O terminals 8. RS-232 port
9. Mounting slot clip 10. RS-485 port
11. DC power input
I/O Terminal Layout
SEN-SEN+SIG-SIG+EXC-EXC+ SIG+EXC-EXC+SHD SHDSEN-SEN +SIG-
DVP02LC-SL
CH1 CH2
- 1 -
[ Fi gure 1 ]
External Wiring
4 strain guage
6 strain guage
Terminal
of power
module
Note 1: Please connect the terminal on both the power module and Load Cell module to the system
earth point and ground the system contact or connect it to the cover of power distribution
cabinet.
Grounding
*1
System
grounding
(100 or less)
EXC+
EXCSIG+
SIG-
SEN+
SEN-
EXC+
EXCSIG+
SIG-
SEN+
SEN-
0V
24V
A+5V
AGND
A+5V
AGND
DC/DC
Converter
CH1
CH2
A+5V
AGND
[ Fig ure 2 ]
Electrical Specifications
Load cell module Voltage output
Rated power supply voltage/
power consumption
Voltage Boundary 18 to 31.2 VDC
Max. current consumption 125 mA
Input signal range ± 40 mVDC
Sensibility +5 VDC +/-10%
Internal resolution 24 bits
Communication port RS-232, RS-485
Applicable sensor type 4-wire or 6-wire strain gauge
Temperature coefficient span ≤ ± 50 ppm/K v. E
Temperature coefficient zero
point
Linearity error ≤ 0.02%
Response time 2, 10, 20, 40, 80 ms × channels
4 measuring ranges 0 to 1 mV/V, 0 to 2 mV/V, 0 to 4 mV/V, 0 to 6mV/V
Max. distance for connecting
to load cell
Max. current output 5 VDC * 300 mA
Permitted load cell resistance 40 to 4,010 Ω
Common mode rejection
(CMRR @50/60 Hz)
Dynamic value filter Setting range: K1 to K5
Average value filter Setting range: K1 to K100
Isolation method
24 VDC (-15 to +20%) / 3W
≤ ± 0.4 μV/K
100 M
≥100dB
500 VAC between digital circuits and Ground
500 VAC between analog circuits and Ground
500 VAC between analog circuits and digital circuits
- 2 -
Load cell module Voltage output
Series connection to
DVP-PLC MPU
Operation / storage
temperature
Vibration / shock immunity
Complying with DIN1319-1, the tolerance of measured value should be ≤ 0.05% under 20°C
+ 10K temperature range
When the corrected ambient temperature and the actual temperature have a difference of
more than 10°C, it is suggested that you re-correct it.
Connectable to the left side of MPU, numbered from 100 to
107 according to the position of module from the closest to
farthest to MPU.
Operation: 0 to 55°C (temp.), 50 to 95% (humidity), pollution
degree 2
Storage: -25 to 70°C (temp.), 5 to 95% (humidity)
International standards: IEC61131-2, IEC 68-2-6 (TEST Fc)/
IEC61131-2 & IEC 68-2-27 (TEST Ea)
.
Control Register
CR# Add. Attrib. Register name Explanation
#0 H1000 O R Model name
#1 H1001 O R Firmware version Display the current firmware version in hex.
#2 H1002 O R/W Characteristic value
#3 H1003 O R/W
#4 H1004 O R
#6 H1006 X R/W
#7 H1007 O R/W
#8 H1008 O R/W CH1 tare weight
#9 H1009 O R/W CH2 tare weight
#10 H100A O R/W CH1 average times
#11 H100B O R/W CH2 average times
#12 H100C X R CH1 average weight
#13 H100D X R CH2 average weight
#14 H100E X R CH1 present weight
#15 H100F X R CH2 present weight
#16 H1010 O R/W CH1 standstill times
#17 H1011 O R/W CH2 standstill times
Reaction time for
measurement
Average value of all
channels
CH1 to CH2 read tare
weight
CH1 to CH2 gross/net
weight
Set up by the system:
DVP02LC-SL model code = H’4206
Mode 0 (H’0000): 1 mV/V
Mode 1 (H’0001): 2 mV/V, default
Mode 2 (H’0002): 4 mV/V
Mode 3 (H’0003): 6 mV/V
Mode 0 (H’0000): 2 ms
Mode 1 (H’0001): 10 ms
Mode 2 (H’0002): 20 ms
Mode 3 (H’0003): 40 ms
Mode 4 (H’0004): 80 ms, default
Sum up CH1 average value and CH2
average value and equalize them.
Equation: (CH1 average value + CH2
average value)/2
Read present average value as tare weight
value
bit0: CH1; bit1: CH2; bit2 to bit15: reserved
Display present weight as Gross (K0) or Net
(K1). bit0 to bit3: CH1; bit4 to bit7: CH2; bit8
to bit15: reserved.
Take CH1 for example: bit3 to bit0 = 0000,
gross; bit3 to bit0 = 0001, net; bit3 to bit0 =
1111, channel disabled.
The user can write in the weight or read it by
commands.
Default: K0; Range: -K32,768 to K32,767.
Default: K10; Range: K1 to K100.
When the set value exceeds the range, it will
automatically be changed to K1 or K100.
Display average weight.
Display present weight.
Default: K5
Range: K1 to K500
- 3 -
CR# Add. Attrib. Register name Explanation
#18 H1012 O R/W CH1 standstill range
#19 H1013 O R/W CH2 standstill range
#20 H1014 O R/W CH1 decimal place
#21 H1015 O R/W CH2 decimal place
#22 H1016 O R/W
#23 H1017 O R/W
#24 H1018 O R/W
#25 H1019 O R/W
#26 H101A X R/W
#33 H1021 O R/W
#34 H1022 O R/W
CH1 unit of
measurement
CH1 unit of
measurement
CH2 unit of
measurement
CH2 unit of
measurement
Weight correction
command
CH1 weight base
point
CH2 weight base
point
#35 H1023 O R CH1 max. weight
#36 H1024 O R CH2 max. weight
#37 H1025 O R/W
#38 H1026 O R/W
#39 H1027 O R/W
#40 H1028 O R/W
#41 H1029 X R/W
Upper limit for CH1
zero point check
Upper limit for CH2
zero point check
Lower limit for CH1
zero point check
Lower limit for CH2
zero point check
Saving set value
(H’5678)
Default: K10
Range: K1 to K10,000
Default: K2
Range: K1 to K4
Enter max. 4 ASCII words.
CR#22, CR#24: High word
CR#23, CR#25: Low word
For the user to correct the weight.
Default: H’0000
H’0001: CH1 Reset to zero command
H’0002: CH1 Weight base point command
H’0003: CH2 Reset to zero command
H’0004: CH2 Weight base point command
For CR#33 to CR#34 default = K1,000;
Range: K-32,768 to K32,767
Steps for correction: Take CH1 for example
1: Place no weights on the load cell
2: Set up CR#26 command = “H’0001”
3: Place standard weights on load cell
4: Write the weight of the weights on the plate
into CR#33.
5: Set up CR#26 command = “H’0002”
Set up the max. weight. When the measured
value exceeds the set value, error codes will
be recorded.
Reference for reset to zero. When the weight
is within this range, the status code will be set
to “zero bit”, indicating the current zero
weight status.
Default: K10
Range: K-32,768 to K32,767
Reference for reset to zero. When the weight
is within this range, the status code will be set
to “zero bit”, indicating the current zero
weight status.
Default: K-10
Range: K-32,768 to K32,767
Save the present set value and write all the
set values into the internal Flash for use next
time DVP02LC-SL is switched on.
H0: No action, Default
H’FFFF: Saving is successful
H’5678: Write to internal Flash
When H’5678 is written in, all set values will
be saved in Flash. When the saving is
completed, CR#41 will become H’FFFF. If the
value written in is not H’5678, it will
automatically return to H0, e.g. write K1 into
CR# to return to K0.
- 4 -
CR# Add. Attrib. Register name Explanation
#43 H102B X R/W CH1 filter percentage
#44 H102C X R/W CH2 filter percentage
#45 H102D X R/W
#46 H102E X R/W
#50 H1032 X R Status code
#51 H1033 X R Error code
#52 H1034 O R/W RS-232 node address
#53 H1035 O R/W
#54 H1036 O R/W RS-485 node address
#55 H1037 O R/W
Symbols: O means latched. X means not latched.
R means can read data. W means can write data.
c Error Code Table for CR#51:
bit Content Error bit Content Error
b0 K1 (H’0001)
b2 K4 (H’0004)
b4 K16 (H’0010)
b6 ~ b15 K64 (H’0040) Reserved
Note: Every error status is decided by its corresponding bit, so there might be more than
2 error statuses occurring at the same time. 0 refers to no error; 1 refers to error
occurring.
c Communication Format Table for CR#53, CR#55:
bit15 bit14~bit8 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
ACSII/RTU Reserved Baudrate
bit15 ACSII/RTU
bit7~bit4 Baudrate
bit3 Data length (RTU = 8 bits)
bit2 Stop bit
bit1~bit0 Parity
CH1 filter average
value
CH2 filter average
value
RS-232
communication
setting
RS-485
communication
setting
Power supply
abnormality
CH1 conversion
error
CH2 conversion
error
Default: K2
Range: K1 to K5 (Unit: 10%)
Display average weight after filtering.
Condition to enable filter: average time ≥ 30
b0 (H’0001): CH1 zero weight (empty)
b1 (H’0002): CH2 zero weight (empty)
b2 (H’0004): CH1 exceeds max. weight
(overload)
b3 (H’0008): CH2 exceeds max. weight
(overload)
b4 (H’0010): CH1 stable measured value
b5 (H’0020): CH2 stable measured value
b6 ~ b15: Reserved
Store all the error statuses. See “Error Code
Table” below. Default: H’0000
For CR#52, CR#54 default = 1
Range: K1 to K255
For CR#53, CR#55 default = H’0000; Range:
ASCII, 9600, 7, E, 1. See “Communication
Format Table” below.
b1 K2 (H’0002)
b3 K8 (H’0008)
b5 K32 (H’0020)
Data
Description
0 ASCII 1 RTU
0 9,600 bps 1 19,200 bps
2 38,400 bps 3 57,600 bps
4 115,200 bps 5 Else none
0 7 1 8
0 1 bit 1 2 bits
0 Even 1 Odd
2 None 3 None
- 5 -
length
Hardware
abnormality
CH1 SEN voltage
error
CH2 SEN voltage
error
Stop bit Parity