Useful functions for small automation process
Point1. High performance in a small size
23-point type has 2 analog inputs and 1 analog output as standard. This feature makes it possible for 23-point type to be connected directly with various sensors and actuators without adding any analog input /output modules. Either voltage or current can be selected at each point. 10-point type (EH-D10DRA) has 1 analog input (8-bit) as standard.
[Input: 0-10V or 0-20mA, Output: 0-10V or 0-20mA]
Timer constant value can be easily changed using these potentiometers even if you do not have a programming device. Values set by the potentiometers are always reflected in the special internal output. Smoothing is possible for these values.
[The value of the potentiometer 1 and 2 are stored in WRF03E and WRF03F respectively.] [Smoothing: to average the value that varies with time by dividing the specified value.] [The timer value must be set by a variable in advance.]
A high-speed counter is provided as standard eliminating the need for an additional counter module for high-speed applications. 14/23/28-point type with DC input can count up to 1-phase 4 channels.
| 14/23/28-point type | Max. 10kHz |
|---|---|
| 20/40/64-point type | Max. 100kHz |
Select one mode from:
By taking input directly from an external encoder, the position of the object being controlled can be detected.
[The functions that can be used (pulse train, PWM, interruption input, etc.) vary in each mode.]
PWM output is provided as standard.
| 10/14/23/28-point | up to 2kHz |
|---|---|
| 20/40/64-point | up to 65kHz |
Pulsetrain output is also provided as standard.
| 10/14/23/28-point | Max. 5kHz |
|---|---|
| 20/40/64-point | Max. 65kHz |
(64-point type x1 + 28-point expansion unit x4)
Up to 4 expansion units can be connected.
(except for 10-point type)
Cable length is up to 2 meters in total.
To protect valuable programs from being erased during power failure, the MICRO-EH contains flash memory for storing user programs.
A real-time clock is provided as standard
(20/23/28/40/64-point type) for event scheduling.
An optional battery is mountable for data memory back-up.
Filtering delay time can be adjusted to eliminate chattering. It can be set between 0 and 20 ms in units of 0.5 ms.
The 24V terminal at the input terminal block can supply current to external equipment.
[The functions that can be used (pulse train, PWM, interruption input, etc.) vary in each mode.]
10-point type
14-point type, 8/16-point expansion unit, Analog Expansion unit
23/28-point type
64-point type
High speed counter, Pulse train output and PWM output of MICRO-EH
MICRO-EH can perform easily simple positioning control by Pulse train output, and speed control by the PWM output.
With DC(transistor)output type, a pulse train output is possible. MICRO-EH can perform positioning control of a stepping motor etc. by combining a High-speed counter input and a pulse train output.
With using PWM output function, MICRO-EH can perform speed control of DC motor instead of conventional control by the analog output.
