EASZ-2 Manual v1.12 - 12.2.2018 Page 14 / 30
4.5. Cable Paths
Cables entering the unit via glands must not be mechanically stressed and must be properly fixed. If using
NPT ¾”HSK-M-Ex-D glands both the EASZ-2 and cabling must be in a stationary installation.
When running cables to or from the unit in cable paths maximum precautions must be taken to avoid
electromagnetic coupling with other cables capable of causing hazardous voltages or currents.
All cables runs must be protected against any damage.
4.6. Pre-Wired Options
A pre-wired option is useful for improving on-site installation times and reducing possible faults due to
incorrect wiring.
4.6.1. Pre-Wired for Current Loop
EASZ-2 can be ordered pre-wired with the passive current loop option with a specified length of 4-core
cable and a junction box.
The unit is wired internally for the passive current loop and the DIP switch is set to “Passive” with this
option there is no need to open the unit.
If an active current loop is required then it can easily be connected using only 3 cores, but the unit must
be opened and the DIP switch set to “Active”.
4.6.2. Pre-Wired for RS485
EASZ-2 can be ordered pre-wired with the RS485 option with a specified length of 5-core cable and a
junction box.
The unit must be opened and the ModBus address set on the address DIP switches.
If the unit is on the end of the series connection line then a termination resistor can also be selected on
the respective DIP switch.
4.6.3. Bespoke Pre-Wired Options
For bespoke pre-wired options and combinations contact an official EESIFLO sales or service centre.
4.7. Power Supply
WARNING: The unit is powered by DC and must NOT be connected to an AC supply.
The unit should be powered by an external power supply according to the Data Plate on the unit.
When using EASZ-2Ex, if the unit is powered by an IS power supply then all the outputs are IS, if the
unit is powered by a normal supply then all the outputs are not IS.
The EASZ-2 is protected against damage from reverse polarity – but will not function if connected
incorrectly
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