Connector Pin Diagram
Pin Configuration
15-pin terminal block for the sensor connection
Terminal block 15 pole and 5 pole in BSC1-HD-OEM, BSC1-HD-ND, BSC1-HD and BSC1-HD-PM
| 15 POLE TERMINAL BLOCK IN BSC1-HD-OEM, BSC1-HD-ND, BSC1-HD AND BSC1-HD-PM |
| PIN | NAME | DESCRIPTION | TIP |
| 1 | GNDB | Supply Ground | Connection for cable shield. |
| 2 | +Us | + Bridge Sensor Supply | The signals at terminals 2 - 7 are recorded by software in channel 0. Connection of sensors in 4- or 6-wire technology. Bridging between +Us and +UF as well as between -US and -UF are not necessary. |
| 3 | +UF | + Sense for 6-Wire Technology |
| 4 | +UD | + Differential Input |
| 5 | -UD | - Differential Input |
| 6 | -UF | - Sense for 6-Wire Technology |
| 7 | -US | - Bridge Sensor Supply |
| 8 | UE | Ground Analog Input/Output | Analog input between UE and GNDA. The signals between UE and GNDA are recorded by software in channel 1. Analog output between UA and GNDA. |
| 9 | UA | Analog Output ±5 V / Option 4-20mA |
| 10 | GNDA | Ground Analog In/Output |
| 11 | SW1² | Threshold Output No. 1 | Open Collector (Open Emitter alternatively), galvanically isolated. |
| 12 | Tara¹ | Tare Input | Affects digital serial and Analog output. |
| 13 | SW2² | Threshold Output No. 2 | See Tip for SW1. |
| 14 | UB | Supply Yoltage 12 - 24 VDC | Connection for supply voltage. |
| 15 | GNDB | Supply Ground |
- In case of voltages above 3.4 V at this terminal, a tare adjustment is initiated. Offset adjustment is then done in the analog part of the BSC1-HD. In addition, the digital output is also set to zero.
- Threshold values are programmed via the RS 232 port.
| 5-PIN TERMINAL BLOCK FOR RS232 / RS422 |
| PIN | STANDARD | CAN/CANopen | DESCRIPTION |
| A | GNDC | GNDC | Ground RS232 / RS422 Interface |
| B | RX / RX- | RX | Data Connection RX for RS232 / RX- for RS422 |
| C | TX / TX- | TX | Data Connection TX for RS232 / TX- for RS422 |
| D | RX+ | CAN_GND | RX+ for RS422 | Ground CANbus |
| E | TX+ | CAN_L | TX+ for RS422 | CAN Low |
| F | NA | CAN_H | N/C | CAN High |
Backplate of the table case (BSC1-HD-DT)
Backplate BSC1-HD-DT
M8 plug connector for BSC1-HD-DT CANopen
In the version with CANopen Interface there are two additional M8 male / female connectors on the backplate.
| PIN | FUNCTION | COLOR |
| 1 | CAN-H | BROWN |
| 2 | CAN-L | BLUE |
| 3 | GND | BLACK |
The CAN-Interface is galvanically isolated.
Side panel BSC1-HD-DT
Five 2mm plugs are arranged at the side panel. Two isolated threshold outputs and one input for the tare / set zero functions are available.
| COLOR | FUNCTION | DESCRIPTION |
| BLACK | SET ZERO INPUT | Input voltage 9 - 30 Volts |
| GREEN | THRESHOLD 1 | CMOS relay outputs, isolated, 60 VDC, 40 VAC |
| YELLOW | THRESHOLD 2 | CMOS relay outputs, isolated, 60 VDC, 40 VAC |
| 12-PIN TERMINAL BLOCK BSC1-HD-DT |
| PIN | NAME | DESCRIPTION | TIP |
| 1 | SHIELDING | Shield and GNDB | Connect the cable shield here. |
| 2 | +US | + Bridge Sensor Supply | The signals at terminals 2..7 are acquired by software. Connection of sensors in 4- or 6-wire technology. Bridging between +Us and +UF as well as between -US and -UF are not necessary. |
| 3 | +UF | + Sense for 6-Wire Technology |
| 4 | +UD | + Differential Input |
| 5 | -UD | - Differential Input |
| 6 | -UF | - Sense for 6-Wire Technology |
| 7 | -US | - Bridge Sensor Supply (GND) |
| 8 | -UD2 | - Differential Input 2 | To connect half- and quarter bridges, terminal 8 and 9 must be connected together. See connection scheme on p.5. |
| 9 | HB | Completion for half bridge |
| 10 | QB120 | Completion quarter bridge 120 Ohms | For connection of quarter bridge, 120, 350 or 1000 Ohms. |
| 11 | QB350 | Completion quarter bridge 350 Ohms |
| 12 | QB1000 | Completion quarter bridge 1000 Ohms |
Connection of 12-pole terminal block BSC1-HD-DT
Connection Scheme 12-Pin Terminal Block
Connection of Full-, Half- and Quarter bridge sensors to the 12-pole terminal block
15-Pin SUB-D Connector of the BSC1-HD-DT
| CONNECTION OF SUB-D 15 PLUG |
| PIN | NAME | DESCRIPTION |
| 1 | SHIELDING | Cable shield |
| 2 | GNDA | Analog input ground |
| 7 | TARE | Tare input / Trigger input |
| 9 | UE | Analog input |
| 10 | UA | Analog output |
| 6 | +US | Positive bridge sensor supply |
| 5 | -US | Negative bridge sensor supply |
| 8 | +UD | Positive differential input |
| 15 | -UD | Negative differential input |
| 13 | +UF | Positive sense for 6-wire technology |
| 12 | -UF | Negative sense for 6-wire technology |
| 14 | HB | Completion for half bridge |
| 11 | QB120 | Completion quarter bridge 120 Ohms |
| 3 | QB350 | Completion quarter bridge 350 Ohms |
| 4 | QB1000 | Completion quarter bridge 1000 Ohms |
To connect half- and quarter bridges, pin 14 and pin 15 must be connected together. Quarter bridges are connected in 3-wire technology at pins 5, 8 12 14 and QB (3, 11 or 4).
Connection Diagram 15-Pin D-SUB Connector
Connection of Full-, Half- and Quarter bridge sensors to the 15-pole SUB-D connector
All ground connections are individually protected by interference suppressor inductors in the BSC1HD. Terminals GNDB are connected to the housing via interference suppression inductor. Currents above 1A between the terminals and the housing result in damage to the interference suppression inductor. Before connecting, please check whether housing, supply ground, the ground of your data acquisition system and your port are at the same potential.
Connection and start-up
Charging the integrated battery
The integrated rechargeable battery of the BSC1-HD-DT is charged via the DC socket 2.1 x 5.5 mm at the back of the device. The state of charge is indicated by the LED on the back of the device. When the battery is fully charged, the LED goes out or the brightness is reduced. The charging time is about 8 – 12 hours.
Connecting the sensor
A strain gage full bridge or a load cell is connected to the amplifier’s terminal block as shown below:
| 4- WIRE TECHNOLOGY | 6-WIRE TECHNOLOGY |
| FUNCTION | PIN | FUNCTION | PIN |
| + SUPPLY | 2 | + SUPPLY | 2 |
| - SUPPLY | 7 | - SUPPLY | 7 |
| + SIGNAL | 4 | + SIGNAL | 4 |
| - SIGNAL | 5 | - SIGNAL | 5 |
| | | + SENSE | 3 |
| |
| | | - SENSE | 6 |
All cable shields should be connected to the metal of the cable entrance or to GND.
The supply voltage must be connected to the PINs 14 (+) and 15 (GND) of the BSC1-HDOEM, BSC1-HD-ND, BSC1-HD and the BSC1-HD-PM.
The Analog output transmits a signal which is proportional to the measured force. We offer the BSC1-HD with the following options: ±5 V, 0…10 V, or 4…20 mA current output. The output signal is present at the PINs 9 and10 (Ground).
The sensitivity of the amplifier can be changed by removing the Jumper „JP1“ from 2 mV/V) to 1 mV/V. The jumper „JP1“ is located on the circuit board, for more detailed information refer to the Strain Gage Bridge Amplifier BSC1-HD User’s Manual, Page 64.
Connecting the PINs 12 and 13 triggers a zero-point adjustment at the analog and digital outputs. The analog output delivers a voltage from 0 V or a current of 4mA. The system is then ready for measurements.
1) At the analog output the benefits of the 6-conductor technology are not supported.
Connecting the serial interface
If an RS 232 or RS422 port is used, the following connections should be set up to the PC:
| BSC1-HD PIN | Cable type | 9-pin Sub-D-Pin (PC-side) |
| PIN | FUNCTION | FUNCTION | Data Wire |
| A | GND | Interface Ground | GND | 5 |
| B | RX(-) | Data Wire | RX | 3 |
| C | TX(-) | Data Wire | TX | 2 |
| D (RS422 Only) | TX+ | Data Wire | TX+ | - |
| E (RS422 Only) | RX+ | Data Wire | RX+ | - |
The data cables RX and TX between the amplifier and the PC are crossed at the SUB-D connector of the BSC1-HD-PM.
The measuring values will be displayed on the PC while starting the supplied configuration program.
The measuring amplifier BSC1-HD-DT needs a fully connected null modem cable, which means crossing of RxD with TxD, RTS with CTS, and DCD+DSR with DTR also GND with GND (2 with 3, 7 with 8, 1+6 with 4 as well as 5 with 5).
Commissioning devices with CANopen interface
For devices with CANopen interface the changing of settings via USB port or via RS232 interface is blocked. These settings via USB or RS232 will be however possible only with the switch off of the CANopen interface.
To ensure the conformity with the CANopen protocol, the CANopen interface must be switched on in the factory state.
The switch off of the CANopen interface is possible with the program “GSV-Term”. You can find the corresponding point to switch-off the CANbus under this path: “2” (for the second side) –> “b” (for baud rate / CAN) –> “c” (for CANbus) –> “1” (for switch on/off). Please note the instructions ba-BSC1-HD CanOpen.pdf.
3 Pin Connector Plug / Socket M8
Connector plug and socket are 1:1 connected.
| PIN | FUNCTION | BSCI-CAN | WIRE COLOR |
| 1 | Transmit Data TxD / CAN_H | 13 | Brown |
| | | | |
| 3 | Receive Date RxD / CAN_L | 12 | Blue |
| 4 | GND | 11 | Black |
Jumper for terminating resistor 120 Ohm
The photos show the position for the jumper. For closed jumper the terminating resistor of 120 Ohm is activated.
Jumper for terminating resistor for BSC1-HD-ND
Jumper for terminating resistor for BSC1-HD-DT
For more information visit Electrical Wiring Diagrams
