5/2004 Manual for connection and operation of the EV-94 EB page 4 of 28
2. Introduction
The EV-94 EB is a microprocessor controlled displaying, monitoring and
controlling device.
The device is supporting one universal interface for the connection of:
- Standard transmitter signals (0-20mA, 4-20mA, 0-50mV, 0-1V,
0-2V and 0-10V )
- RTD (for Pt100 and Pt1000),
- Thermocouple probes (type K, J, N, T and S)
- Frequency (TTL and switching contact)
As well as rotation measuring, counting, etc. ...
The device features two switching outputs, which can be configured as
2-point-controller, 3-point-controller, 2-point-controller with min./max. alarm,
common or individual min./max. alarm.
The state of the switching outputs is displayed with two LED’s beneath the
front 4-digit LED-display.
The left LED displays the state of the 1st output, the right LED displays the state of the 2nd output.
Furthermore the device supports one
EASY
BUS
-interface for communicating with a host computer that makes
the device to a full functions
EASY
BUS
-module.
When leaving our factory the EV-94 EB has been subjected to various inspection tests and is completely
calibrated.
Before the EV-94 EB can be used, it has to be configured for the customer’s applica-
tion.
Hint: In order to avoid undefined input states and unwanted or wrong switching processes, we sug-
gest to connect the device’s switching outputs after You have configured the device properly.
For configuring the EV-94 EB please proceed as follows:
- Disassemble the red front plate (see sketch).
- Connect the device to its supply
(see chapter 3 ‘Electric connection‘).
- Switch on the supply voltage and wait until the device completed its
built-in segment test .
- Adjust the device to the input signal required. Follow the instructions
in chapter 4 ‘Input configuration‘
- Follow the instructions given in chapter 5 ‘Output and alarm
configuration‘ to configure the outputs of the EV-94 EB.
- Reassemble the red front plate.
- Connect the device properly (see chapter 3 'Electric connection‘)
