I-87084W-G 4/8-ch Counter/Frequency/Encoder Input Module, up to 1 MHz

The I-87082W-G CR is a two-channel counter and frequency input module for engineers who need high-speed pulse counting or frequency measurement within an I-8K/I-87K PAC I/O system. Each channel can be set up for counter or frequency operation, with 32-bit counts and inputs up to 100 kHz.Each input can be chosen as isolated or non-isolated to suit the signal source. Isolated inputs provide 3750 Vrms isolation and accept ON levels from +3.5 VDC to +30 VDC. Non-isolated inputs use a programmable threshold between 0 and +5 VDC. A programmable digital filter and a low pass filter help reject noise with pulse widths shorter than the minimum high or low width.Two sink-type open-collector outputs provide programmable alarm signalling, and the module includes an RS-485 port using the DCON protocol. A dual watchdog, with a 1.6-second module watchdog and a programmable communication watchdog, adds supervision for unattended installations.ApplicationsBuilding AutomationFactory AutomationMachine AutomationRemote MaintenanceRemote DiagnosisTesting Equipment

I-87088W-G CR is an 8-channel PWM output and 8-channel counter input module for the I-8K/I-87K high profile series. Its PWM outputs generate variable duty cycle, variable frequency waveforms that can drive analog-style control circuits, such as motor position or speed, lamp brightness and fan speed, without a separate analogue output card.Each PWM channel can run in burst or continuous mode and can be started by hardware or software trigger. Outputs can be set individually or driven synchronously. All digital input channels can operate as high-speed counters at up to 1 MHz, with 32-bit counts.The module communicates over one RS-485 port using the DCON protocol at 1200 ~ 115200 bps. A module watchdog and a programmable communication watchdog are included, and the intra-module isolation is rated at 3750 VDC. The -G variant is RoHS compliant. For a PWM load voltage of up to +50 V, the separate I-87088W-G/S variant is the one to consider; this code is specified for +3.5 ~ +5 VDC load voltage.ApplicationsMotor controlPosition and speed controlDimming lamp brightnessFan speed control

The I-87088W-G/S provides eight PWM output channels and eight high-speed counter inputs in a single I-8K/I-87K PAC I/O module. PWM is used to drive analogue-style loads by switching a digital output with a variable duty cycle and frequency, which suits position or speed control of motors, lamp dimming and fan speed control.Burst or continuous mode can be selected for the PWM outputs depending on the application, and each channel can run individually or in synchronised operation. Output can be started by software or hardware trigger. Each digital input channel can also operate as a counter at up to 1 MHz, with 32-bit counts.The /S variant allows the load voltage to be increased from +3.5 to +50 V for both the PWM outputs and the counter channels. The price list for this ordering code includes a DN-8P8C/S external board.ApplicationsControlling motor position or speedDimming lamp brightnessControlling fan speed

The I-87089W-G is a vibrating wire input module for engineers who need to read resonant-frequency sensors and pass the results to a control system over a serial link. It measures sensor wire frequencies from 450 ~ 6000 Hz and gives a temperature reading for each sensor through its temperature wires.The module supports 8 ~ 32 vibrating wire inputs. Additional DN-1618UB units can be connected to extend a single I-87089W/S to 32 channels. Excitation uses an enhanced square wave, and the module isolates channels from each other at 1 kV and 3000 VDC inside the module.Communication is through one RS-485 port using DCON at 1200 ~ 115200 bps, with N, 8, 1 data format. A module watchdog and a programmable communication watchdog are included. The unit is specified for an operating range of -25 ~ +75 °C.ApplicationsReadout of vibrating wire sensors, where wire tension is derived from the resonant frequency