Baldor iMN1921 installation manual Digital I/O, Digital inputs

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4.5 Digital I/O

The NextMove ST provides:

H24 general purpose digital inputs.

H16 general purpose digital outputs.

Note: It is recommended to use separate shielded cables for the digital inputs. The shield should be connected to the input connector’s shield pin.

4.5.1Digital inputs

The digital inputs are available across a range of connectors, as shown in section 4.1.1. All digital inputs have a common specification:

HGeneral purpose 5V TTL digital inputs with internal pull-up resistors. Can also be assigned to special purposes such as Home, Limit, Stop and Error inputs.

HSampling frequency: 1kHz

DIN0

DGND

3

2

+5V

10k

1nF

NextMove ST

	74AHCT14	MintMT
	74AHCT14	INX.0
		INX.0
		GND
		GND

Figure 12 - General purpose digital input - DIN0 shown

CAUTION: Do not connect 24V signals to the digital inputs.

These are unprotected inputs connected directly to 74AHCT14 devices. If an input is configured as edge triggered, the triggering pulse must have a duration of at least 1ms (one software scan) to guarantee acceptance by MintMT. The use of shielded cable for inputs is recommended.

The 24 general purpose digital inputs can be shared between axes and can be configured using WorkBench v5 (or the Mint keywords beginning INPUT...) to determine their active level and other properties. The state of individual inputs can be read directly using the INX keyword. See the MintMT help file.

MN1921

Input / Output 4-11

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Contents NextMove ST Motion Controller Page Contents Operation General Information Precautions Safety NoticeMN1921 Introduction NextMove ST featuresReceiving and inspection Units and abbreviations PhaseIntroduction MN1921 Introduction You should read all the sections in Basic InstallationLocation requirements Mounting the NextMove ST Package dimensionsOther requirements for installation Basic Installation MN1921 Input / Output Connector locations Operation using combined drive and logic supply Power connectionsConnecting separate drive and logic supplies Operation using separate drive and logic suppliesStepper outputs Connecting a 4-wire motorStepper axes 0-2 drive outputs Connecting a 6-wire motor Connecting a 8-wire motor, parallel windings Connecting a 8-wire motorStepper output pin header J3, and output circuit shown Stepper axes 0-3 logic outputsAnalog inputs Analog I/OAnalog output Analog outputDigital inputs Digital I/OUsing a digital input as a Stop input Using a digital input as a Limit or Home inputUsing a digital input as an Error input Auxiliary Encoder inputs Auxstep IN, Auxdir IN, AuxzDigital output DOUT0 shown Digital outputsDriveenableoutput keyword Error outputGlobalerroroutput keyword Jumper settingsRS232 serial communication Other I/OLocation Pin Name DescriptionRS232 serial port connections 2 50-pin edge connectorTypical can network connections Can communicationCANopen and Baldor can JP1 This will connect an internal terminating resistorHost PC Connection summary minimum system wiringInput / Output MN1921 Installing WorkBench Connecting the NextMove ST to the PCStarting the NextMove ST Preliminary checksPower on checks Help file WorkBenchStarting WorkBench MN1921 Operation Selecting a scale Configuring an axisClick Apply Testing the output Stepper axis testingDigital input configuration Digital input/output configurationDigital output configuration Saving setup information Loading saved information SupportMe feature Problem diagnosisStatus display NextMove ST indicatorsSurface mount LEDs D3, D4 and D16 Communication Symptom CheckMotor control Output power Value Input powerInput impedance 120 Input ADC resolution Bits Common mode voltage rangeEquivalent resolution ±10V input Output current max Update interval ImmediateUnit Value Maximum output frequency KHz 200 Output voltage Stepper axis 0-2 drive outputsOutput current maximum, per axis Unit Value Output typeCan interface Unit Value SignalEnvironmental Channels Protocols CANopenIndex Index MN1921 Comment CommentsComments MN1921 Page LT0184A00