Connector Pin Diagram

I/O Connector

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The I/O connector on the rear panel is the 15 pin female D connector labeled I/O. It contains the Logic I/O, Analog outputs, and 5V supply voltage. The table below shows the pinout. Typical input and output connections follow. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

Note: A 15 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical Logic Input Sources

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Logic Inputs

TTL compatible Low-true Schmitt trigger Pull-up Resistor:
47k (internal)

Typical Logic Output Loads

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Logic Outputs

Open collector Low-true Operating Voltage:
24V max

Sink Current:
300mA max

Ext +5VDC

Load Current:
250mA max

Model ACUA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model ACUA (AC Strain Gage Amplifier). A drawing of a typical cable follows. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

CAL FB is CAL Feedback

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical AC Strain Gage Transducer Cable

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6 Wire Cable (recommended for most high accuracy applications)

Excitation:
3Vrms, 3030Hz

Excitation Load:
80 to 2000

Input Sensitivity:
0.5 to 5mV/V

Max Cable Length:
500ft (load••100Ω)
200ft (load<100Ω)

Model LVDA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model LVDA (LVDT Amplifier). A drawing of a typical cable follows. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

CAL FB is CAL Feedback

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical LVDT Transducer Cable

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Model LVDA

Excitation:
2Vrms 2.5, 3, 5, or 10kHz

Excitation Load:
•80Ω

Input Sensitivity:
100 to 1000mV/V

Max Cable Length:
50ft

Model DCSA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model DCSA (DC Strain Gage Amplifier). A drawing of a typical cable follows. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

CAL FB is CAL Feedback

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical DC Strain Gage Transducer Cable

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6 Wire Cable (recommended for most high accuracy applications)

Model DCSA

Excitation:
5 or 10VDC

Excitation Load:
80 to 2000Ω (5V) 170 to 2000Ω (10V)

Input Sensitivity:
1 to 4.5mV/V

Max Cable Length:
500ft

Model DCVA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model DCVA (DC Voltage Amplifier). A drawing of a typical cable follows. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

+CAL (NO) and -CAL (NO) are normally open contacts that short to CAL COM during Remote (+) and (-) CAL operations, respectively.

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical DC Voltage Transducer Cable

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6 Wire Cable (recommended for most high accuracy applications)

Model DCVA

Excitation:
5V@250mA* or 15V@100mA*

Input Sensitivity:
±1 to ±10V

Max Cable Length:
2000ft

Model DCIA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model DCIA (DC Current Amplifier). Drawings of typical cables follow. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical Transmitter (2 wire) Cable

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Model DCIA

Excitation:
15V@30mA

Input Ranges:
4-20mA, 12±8mA, 0±10mA, 0±20mA

Max Cable Length:
2000ft

Typical Transmitter (4 wire) Cable

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Model DCIA

Excitation:
15V@30mA

Input Ranges:
4-20mA, 12±8mA, 0±10mA, 0±20mA

Max Cable Length:
2000ft

*If transmitter has single-ended output then connect – input (pin 2) to GND at transmitter. Do not make this connection at DCIA connector. Instead, run separate wires for Power GND and Output GND as shown in diagram.

Model CTUA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model CTUA (Frequency Input Module). Drawings of typical cables follow. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical Passive Speed Pickup Cable

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Model CTUA

Excitation Supplies:
5V@250mA* or 12V@125mA

Input Types:
Differential or Single-ended

Input Thresholds:
10,20,50,100mVp-p or TTL

Max Cable Length:
2000ft

Typical Zero Velocity Speed Pickup Cable

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Model CTUA

Excitation Supplies:
5V@250mA* or 12V@125mA

Input Types:
Differential or Single-ended

Input Thresholds:
10,20,50,100mVp-p or TTL

Max Cable Length:
2000ft

To be compatible with other systems, some Zero Velocity Speed Pickup cables have Common going to Input B (pin 2) and a jumper going from Input B (pin 3) to GND (pin 4). These cables are compatible with the Model CTUA, also.

Typical Zero Velocity Speed Pickup Cable

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Model CTUA

Excitation Supplies:
5V@250mA* or 12V@125mA

Input Types:
Differential or Single-ended

Input Thresholds:
10,20,50,100mVp-p or TTL

Max Cable Length:
2000ft

*Both excitation voltages can be used simultaneously with the following restrictions.
(5V current) +4.8 x (12V current) •• 700mA, 5V current •• 250mA, 12V current •• 125mA

Model UDCA Connector

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Transducer connectors on the rear panel are the two 9 pin female D connectors labeled CH1 and CH2. The pinout is dependent on the type of modules installed. The table below shows the pinout for the Model UDCA (Encoder/Totalizer Module). Drawings of typical cables follow. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals.

! CAUTION: The COM connector is also a 9 pin female D connector.

For systems purchased without cables, a 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical Rotary Encoder (with Index Pulse) Cable

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Model UDCA

Excitation Supplies:
5V@250mA* or 12V@125mA*

Input Types:
Single-ended

Count Modes:
1X, 2X, 4X, Events

Max Cable Length:
500ft

To have Index Pulse reset the Model UDCA counter once per revolution, make sure the Reset Signal setting is TTL Low resets or TTL High resets depending on the polarity of the Index Pulse.

If Reset Signal setting is ignore, then the Reset signal (pin 5) does not reset the counter. Index Pulse can still be connected.

The counter can also be reset via RESET key (see RESET Key – Reset UDCA Counter in CHAN SETTINGS) and/or Logic I/O (see Reset Count in LOGIC I/O).

Typical Encoder (with Reset Switch) Cable

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Model UDCA

Excitation Supplies:
5V@250mA* or 12V@125mA*

Input Types:
Single-ended

Count Modes:
1X, 2X, 4X, Events

Max Cable Length:
500ft

The momentary switch resets the Model UDCA counter. Make sure the Reset Signal setting is TTL Low resets.

The counter can also be reset via RESET key (see RESET Key – Reset UDCA Counter in CHAN SETTINGS) and/or Logic I/O (see Reset Count in LOGIC I/O).

*Both excitation voltages can be used simultaneously with the following restrictions.
(5V current) +4.8 x (12V current) •• 700mA, 5V current •• 250mA, 12V current •• 125mA

Typical Reset and Reset Arm Sources

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Make sure Reset Signal and/or ResetArm Sig settings are each set to the proper polarity.

Typical Input A (Event) Sources

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Make sure Count Mode setting is Event (Input A) and Count Edge setting is set to the proper edge.

Model COM Connector

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The RS232/485/422 communications connector on the rear panel is the 9 female D connector labeled COM. The table below shows the pinout. Drawings of typical cables follow. Refer to the 9850 Torque Transducer and Load Cell Indicator Manual Appendix H, Page 161 for specifications of the signals and Appendix F, Page 143 for serial communication commands.

! CAUTION: CH1 and CH2 connectors are also 9 pin female D connectors.

A 9 pin male mating connector with hood is provided with unit. It includes various size grommets for different cable thickness.

Typical RS485 Cable

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GND connection is used to keep common mode voltage to a safe range at receivers. If GND is not connected, reliability and noise immunity are sacrificed.

9850 COM port

• Set BAUD Rate, # of Data Bits, and Parity to desired values.
• Make sure each 9850 instrument has a unique Unit ID. See Unit ID in COM OPTIONS.

Computer COM port

• Make sure BAUD Rate, # of Data Bits, and Parity are set the same as those for the 9850 instrument(s).
• Set # Stop Bits to 1.
• Disable handshaking (such as, RTS, XON/XOFF, etc).
• Enable RS485 driver always. See manual for RS485 adapter. Some adapters use RTS to enable drivers. In these cases, set up port to always turn on RTS.

Termination resistors (RT) should only be used with high data rates and long cable runs. A good rule of thumb is 2000ft at 38400 BAUD. Terminate with 120Ω at no more than two places; the computer and the 9850 at the furthest end. To use the termination resistors installed in the 9850, Refer to the 9850 Torque Transducer and Load Cell Indicator Manual RS485/422 Termination Jumpers in Appendix B, Page 121.

Bias resistors (RB) are used to maintain a proper idle voltage state when all drivers are inactive. Otherwise, the state of the signal is unknown.

As long as the computer communication port is set up to enable drivers (TXD) always when port is open, there is no need for bias resistors on the Receive Data lines (RXD) at the 9850 instrument(s).

But, since the drivers (TXD) on the 9850 instrument are only active when they are addressed, bias resistors are required on the Receive Data lines (RXD) at the computer. Typically, these are provided on the RS485 adapter.

There are two requirements for determining the value of RB. There must be at least 200mV from +RXD to -RXD, and the load of the RS485 drivers must be greater than 54Ω . The impedance of an RS485 receiver is 12kΩ . If the bias resistors are too large, noise immunity decreases with possible data loss. If the bias resistors are too small, the load on the driver increases. The value for the bias resistors depends on whether termination resistors (RT) are used.

If termination resistors (RT) are not used, RB must be between 28Ω and 144kΩ. A typical value for RB is 4.7kΩ.

If termination resistors (RT) are used, RB must be between 283Ω and 716Ω. A typical value for RB is 470Ω.

Typical RS232 Cable

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GND connection is used to keep common mode voltage to a safe range at receivers. If GND is not connected, reliability and noise immunity are sacrificed.

9850 COM port

• Set BAUD Rate, # of Data Bits, and Parity to desired values.
• Even though only one instrument can be connected, the Unit ID is required for serial communication commands. See Unit ID in COM OPTIONS.

Computer COM port

• Make sure BAUD Rate, # of Data Bits, and Parity are set the same as those for the 9850 instrument.
• Set # Stop Bits to1.
• Disable handshaking (such as, RTS, XON/XOFF, etc).

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