GCAN GC-3804 User manual
GC-3804
4-channel PT100 input module (RTD)
User manual
Document version: V3.10 (2021/03/15)
Guangcheng Technology GC-3804 user manual
Contents
1 Function Introduction.............................................................................................. 4
1.1 FunctionOverview........................................................................................ 4
1.2 Performance characteristics..........................................................................4
1.3 Typical applications......................................................................................4
2. Equipment installation and use...............................................................................5
2.1 Module fixing............................................................................................... 5
2.2 Wiringmethod...............................................................................................5
2.3 System statusindicator.................................................................................. 7
2.4 Use in combination with GCAN-PLC-400/510 series................................. 7
2.5 Combination with GCAN-IO-8000 series equipment.................................. 8
3. Technical specifications......................................................................................... 9
4. Disclaimer.............................................................................................................10
5. Module selection table..........................................................................................11
Sales and service.......................................................................................................13
Guangcheng Technology GC-3804 user manual
1 Function Introduction
1.1 FunctionOverview
The GC-3804 module is an I/O module with integrated 4-channel temperature
sensor (PT100) input channel. The module can be used to collect temperature
information in real time and send the collected values to the GCAN-PLC-400
or GCAN-8000/8100 series couplers via the internal bus. This module can be
used with any other GC series IO module to achieve the collection and
processing of analog data in industrial automation or distributed control
systems.
1.2 Performance characteristics
●The number of input points is 4;
●The wiring form adopts 2-wiresystem;
●The sensor type is PT100;
●The measuring temperature range is -200~+500℃;
●The measurement resolution is 0.1℃/digit;
●Conversion time is about 250ms;
●Measuring current flow is less than 0.5 mA (depending onload);
●The electrical isolation is 500Vrms;
●Power supply via GCAN-PLC-400 orGCAN-8000/8100;
●Current consumption is 200mA;
●The bit width input in the process image is 4 x 2bytes;
●Configuration without address setting, through bus coupler or controller
configuration;
●Working temperature range:-40℃~+85℃;
●Dimensions: length 100mm * width 69mm * height12mm.
1.3 Typical applications
●Directly connect the resistance sensor;
●Connect PT100 to bus coupler or control
Guangcheng Technology GC-3804 user manual
2. Equipment installation and use
This chapter will explain in detail the installation method, wiring method, the
meaning of the indicator light and the meaning of the interface of the GC-3804
module.
2.1 Module fixing
The installation method of GC-3804 module is shown in Figure 2.1, you need
to use a flat screwdriver for auxiliary installation.
Figure 2.1 GC-3804 module installation
First, you need to install the fieldbus coupler on the rail, and then attach the
GC-3804 module to the right of the fieldbus coupler or other modules to add
this component. As shown in Figure 2.1, insert the GC-3804 module inward
along the slot until the latch snaps and makes a “click” sound.
The GC-3804 module needs to be used with a GCAN-PLC-400 or GCAN-
8000/8100 series coupler, and can be directly powered by the coupler, so there
is no need to separately provide additional power to it.
2.2 Wiringmethod
As shown in Figure 2.2, first use a flat-blade screwdriver to insert into the
square hole and hold the screw in the square hole. Then insert the cable into the
circular hole. After plugging in, pull out the screwdriver, and the cable can be
firmly locked in the circular hole.
Guangcheng Technology GC-3804 user manual
Figure 2.2 GC-3804 module installation
Figure 2.3 GC-3804 module terminal block
The terminal block of GC-3804 module is shown in Figure 2.3. GC-3804
contains 4 sets of input points, and can connect up to 4 PT100 sensors. The
serial numbers corresponding to the terminals and their meanings are shown in
Table 2.1.
Guangcheng Technology GC-3804 user manual
Terminal
Serial number
Definition
+R1
1
+R1 input
-R1
2
-R1 input
+R2
3
+R2 input
-R2
4
-R2 input
+R3
5
+R3 input
-R3
6
-R3 input
+R4
7
+R4 input
-R4
8
-R4 input
Table 2.1 GC-3804 module indicator
2.3 System statusindicator
The GC-3804 module has 4 error indicators and 4 operation indicators to
indicate the operating status of the device. The specific indication function of
the indicator light is shown in Table 2.2. When the indicator is on, the GC-
3804 module status is shown in Table 2.3.
Indicator light
colour
Indication status
ERR
green
Error indication
RUN
green
Operating instructions
Table 2.2 GC-3804 module indicator
After the GC-3804 module is connected to the PT100 normally, the operation
indicator will light up.
Indicator light
status
Indication status
ERR
Always on
Short circuit
not bright
No error
RUN
Always on
Connect correctly
not bright
Open circuit
Table 2.3 GC-3804 module indicator status
2.4 Use in combination with GCAN-PLC-400/510 series
GCAN-PLC-400/510 supports programming in five languages. The following
uses ST language as an example to introduce how to use GCAN-PLC-400 to
program to read the status of the analog input of the GC-3804 module.
When the GC-3804 module performs ST programming definition, it is
necessary to define the variable type, input signal position, start character,
separator, etc. For example: "AI0 AT%I0.0:INT;", where "0.0" represents the
Guangcheng Technology GC-3804 user manual
start address of the first channel, each channel occupies 2 bytes, the collected
temperature corresponds to -32768~+32767 so the second The starting address
of the channel is I2.0. When the user uses more than one GC-3804 module, the
second GC-3804 needs to be defined from
"I8.0", because each 3804 has 4 channels; "%" (percent sign) is the direct
variable start symbol : ":" (colon) is a variable or type separator. Use the
symbol variable AI0 to read the signed integer from the %I0.0 address. AT
stands for the address of variable access and the additional attributes of the
variable (see page 46 of the e-book for details).
(Note: Input only affects input, output only affects output, output and input do
not affect each other. That is, if there is and only output module in front of the
input module, then no matter how many output modules there are in front, the
address of the first input module is still I0 .0.)
2.5 Combination with GCAN-IO-8000 series equipment
The state of the analog input is represented by two bytes.
For example: GCAN-IO-8000 module node number is 1, the input status of
channel 1 of the first GC-3804 module is 26 ℃, and the input status of other
channels is not connected to the sensor, then the GCAN-IO-8000 module sends
CAN data frame ID is 0x181, data length (DLC is 8, frame data is 0x04, 0x01,
0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F The following table lists a common AI
state and its corresponding state data.
AI status
Number of
channels
1
2
3
4
state
26℃
No sensor
connected
No sensor
connected
No sensor
connected
CAN bus data
04
01
FF
7F
FF
7F
FF
7F
Guangcheng Technology GC-3804 user manual
3. Technical specifications
Connection method
Wiring form
2-wire system
Interface characteristics
Input points
4
sensor type
PT100
temperature range
-200~+500℃
Resolution
0.1℃/digital
Conversion time
＜250 ms
Measuring current
0.5 mA
Measurement error
<±2℃
Electrical isolation
500 Vrms (GC-bus/signal voltage)
Power supply
Powered by GCAN-PLC-400 or
GCAN-8000/8100 coupler, the current
consumption is more than 200mA
Bit width in process image
Input: 4 x2 bytes
Configuration method
Automatic configuration in order
Environmental test
Operating temperature
-40℃~+85℃
Working humidity
95%RH, no condensation
EMC test
EN 55024:2011-09
EN 55022:2011-12
Anti-vibration/impact
resistance
EN 60068-2-6/EN 60068-2-27/29
Anti-electromagnetic
interference/anti-electromag
netic radiation performance
EN 61000-6-2 /EN 61000-6-4
Protection level
IP 20
Basic Information
Dimensions
100mm *69mm *12mm
weight
50g
Guangcheng Technology GC-3804 user manual
4. Disclaimer
Thank you for purchasing GCAN's GCAN series of hardware and software
products. GCAN is a registered trademark of Shenyang Guangcheng
Technology Co., Ltd. This product and manual are copyrighted by Guangcheng
Technology. Without permission, it is not allowed to reproduce in any form.
Before using, please read this statement carefully. Once used, it is deemed to be
an endorsement and acceptance of the entire content of this statement. Please
strictly abide by the manual, product description and related laws, regulations,
policies and guidelines to install and use the product. In the process of using
the product, the user promises to be responsible for his actions and all
consequences arising therefrom. Guangcheng Technology will not be liable for
any losses caused by improper use, installation, or modification by users.
The final interpretation right of the disclaimer belongs to Guangcheng
Technology
Guangcheng Technology GC-3804 user manual
5. Module selection table
GCAN-PLC-400 series products consist of a programmable main control
module, several GC series IO modules and a terminal resistance module.
GC series IO modules currently include five categories: digital input, digital
output, analog input, analog output, and communication extension. The specific
selection table is shown in Table 6.1.
I/O
Type
Characteristic
Signal
Channel
PLC
Control
module
GCAN-PLC-400
CPU:168M
-
-
GCAN-PLC-510
CPU:400M
-
-
GCAN-PLC-511
CPU:400M (2CAN)
-
-
Digital
input
GC-1008
Digital input (PNP)
24V DC
8-channel
GC-1018
Digital input (NPN)
24V DC
8-channel
GC-1502
Counter（200kHz max）
-
2-channel
Digital
output
GC-2008
Digital output (PNP)
24V DC
8-channel
GC-2018
Digital output (NPN)
24V DC
8-channel
GC-2204
relay output
-
4-channel
GC-2302
PWM （20Hz~200kHz）
-
2-channel
Analog
input
GC-3604
Voltage input, 16 bits
-5~+5V
4-channel
GC-3624
Voltage input, 16 bits
10V~+10V
4-channel
GC-3644
Current input, 16 bits
0-20mA
4-channel
GC-3654
Current input, 16 bits
4-20mA
4-channel
GC-3664
Voltage input, 16 bits
0~+5V
4-channel
GC-3674
Voltage input, 16 bits
0~+10V
4-channel
GC-3804
2-wire PT100, 16 bits
Thermal
resistance
4-channel
GC-3822
3-wire PT100, 16 bits
Thermal
resistance
2-channel
Guangcheng Technology GC-3804 user manual
GC-3844/3854/3
864
K type / S type / T type
thermocouple
Thermocouple
4-channel
Analog
output
GC-4602
Voltage output, 16 bits
-5V~+5V
2-channel
GC-4622
Voltage output, 16 bits
-10V~+10V
2-channel
GC-4642
Current output, 16 bits
0-20mA
2-channel
GC-4652
Current output, 16 bits
4-20mA
2-channel
GC-4662
Voltage output, 16 bits
0~5V
2-channel
GC-4672
Voltage output, 16 bits
0~10V
2-channel
GC-4674
Voltage output, 12 bits
0~10V
4-channel
Special
module
GC-6101
RS232/RS485 extension
-
-
GC-6201
GPRS extension
-
-
GC-6221
4G extension
-
-
GC-6501
WiFi extension
-
-
Table 5.1 Selection table
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