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12-bit analog Input / Output (23-point type) |
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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. |
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[Input: 0-10 V or 0-20 mA, Output: 0-10 V or 0-20 mA] |
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This feature
can be applied to a pump system for reservoirs using water level
sensors. |
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Two built-in potentiometers for easy set-up
(except for 10-point type) |
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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. |
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[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.] |
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With these potentiometers, operation
interval can be tuned easily. |
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Built-in high-speed counter |
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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 |
| 64-point type |
Max. 100kHz | | |
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Select one mode from:
- 1-ph 4 ch, 2-ph 2 ch, or 2-ph 1 ch + 1-ph 2ch [64-point]
- 1-ph 4 ch, 1-ph 2 ch, or 2-ph 1 ch + 1-ph 1ch [14-/23-/28-point]
- 1-ph 3 ch, 1-ph 2 ch, or 2-ph 1 ch [10-point]
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By taking input directly from an external encoder, the position of the object being controlled can be detected. |
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[The functions that can be used (pulse train, PWM, interruption input, etc.) vary in each mode.] |
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This feature can be applied to the detection
of the position of objects on various assembly, processing,
and testing lines. |
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PWM and pulse train output (MICRO-EH with DC output) |
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PWM output is provided as standard. |
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Temperature control and light brightness control
are possible by modulating the pulse width.
| 10/14/23/28-point |
up to 2kHz |
| 64-point |
up to 65kHz | | |
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Pulsetrain output is also provided as standard. |
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Simple
positioning control, fine tuning of conveyor's moving distance,
etc. are possible by pulse train output with acceleration/deceleration
function.
| 10/14/23/28-point |
Max. 5kHz |
| 64-point |
Max. 65kHz | | |
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Maximum 176 I/O points
(64-point type x1 + 28-point expansion unit x4) |
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Up to 4 expansion units can be connected.
(except for 10-point type)
Cable length is up to 2 meters in total. |
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Flash memory for storing user programs |
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To protect valuable programs from being erased during power failure, the MICRO-EH contains flash memory for storing user programs. |
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Built-in real-time clock for event scheduling (23/28/64-point type) |
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A real-time
clock is provided as standard
(23/28/64-point type) for event scheduling. |
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Battery for data memory back-up (23/28/64-point type) |
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An optional battery is mountable for data memory back-up. |
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Digital filter |
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Filtering delay time can be adjusted to eliminate chattering. It can be set between 0 and 20 ms in units of 0.5 ms. |
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Power supply for sensors
(14/23/28/64-point type and 14/28-point expansion unit) |
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The 24V terminal at the input terminal block can supply current to external equipment.
[When this power is used as the power supply for the input part of the MICRO-EH, the remaining power can be used for sensors.] |
PLCs : Micro-EH 
