Measurement Computing USB-5201, User Manual

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USB-5201 User's Guide Sensor Connections
15
USB-5201 screw terminal descriptions
Pin Signal Name Pin Description Pin Signal Name Pin Description
1 RSVD Reserved, Do Not Use 27 RSVD Reserved, Do Not Use
2 NC Not connected 28 GND Ground
3 C0H CH0 sensor input (+) 29 C7L CH7 sensor input (-)
4 C0L CH0 sensor input (-) 30 C7H CH7 sensor input (+)
5 NC Not connected 31 RSVD Reserved, Do Not Use
6 RSVD Reserved, Do Not Use 32 NC Not connected
7 C1H CH1 sensor input (+) 33 C6L CH6 sensor input (-)
8 C1L CH1 sensor input (-) 34 C6H CH6 sensor input (+)
9 GND Ground 35 NC Not connected
10 RSVD Reserved, Do Not Use 36 RSVD Reserved, Do Not Use
CJC sensor CJC sensor
11 RSVD Reserved, Do Not Use 37 RSVD Reserved, Do Not Use
12 NC Not connected 38 GND Ground
13 C2H CH2 sensor input (+) 39 C5L CH5 sensor input (-)
14 C2L CH2 sensor input (-) 40 C5H CH5 sensor input (+)
15 NC Not connected 41 RSVD Reserved, Do Not Use
16 RSVD Reserved, Do Not Use 42 NC Not connected
17 C3H CH3 sensor input (+) 43 C4L CH4 sensor input (-)
18 C3L CH3 sensor input (-) 44 C4H CH4 sensor input (+)
19 GND Ground 45 NC Not connected
20 RSVD Reserved, Do Not Use 46 RSVD Reserved, Do Not Use
21 +5V +5V output 47 +5V +5V output
22 GND Ground 48 GND Ground
23 DIO0 Digital Input/output 49 DIO7 Digital Input/output
24 DIO1 Digital Input/output 50 DIO6 Digital Input/output
25 DIO2 Digital Input/output 51 DIO5 Digital Input/output
26 DIO3 Digital Input/output 52 DIO4 Digital Input/output
Use 16 AWG to 30 AWG wire for your signal connections.
Tighten screw terminal connections
When making connections to the screw terminals, fully tighten the screw. Simply touching the top of the screw
terminal is not sufficient to make a proper connection.
Thermocouple input terminals (C0H/C0L to C7H/C7L)
You can connect up to eight thermocouples to the differential sensor inputs (C0H/C0L to C7H/C7L). The USB-
5201 supports type types J, K, R, S, T, N, E, and B thermocouples.
Ground terminals (GND)
The six analog ground terminals ( GND ) provide a common ground for the input channels and DIO bits and are
isolated (500 VDC) from the USB GND.
Power terminals (+5V)
The two
+5V
output terminals are isolated (500 VDC) from the USB +5V.
Caution!
Each +5V terminal is an output. Do not connect to an external power supply to these terminals or
you may damage the USB-5201 and possibly the computer.
Digital terminals (DIO0 to DIO7)
You can connect up to eight digital I/O lines to the screw terminals labeled DIO0 to DIO7 . Each terminal is
software-configurable for input or output.
If a digital bit is set up as an alarm, the bit is configured for output on power-up, and assumes the state defined
by the alarm configuration.