ONLINE ELECTRONICS LTD
ID5000P_5001_A01
Page 14 of 18
5.
EXTERNAL CONNECTIONS
The Special Conditions for Safe Use detailed in section 8 ATEX APPENDIX of this manual must
be observed and followed at all times.
A suitable cable and ATEX certified gland must be provided by the user. A suitable gland to use
with a non-mineral filled cable would be a Peppers Cable Glands Limited CR-XSCK1/20S/M20
barrier gland. A single M20x1.5 threaded entry is provided as standard. The cable cores should
have a length of approximately 150mm inside the unit to allow for ease of connection.
Unless the unit has been ordered with a battery
pack the unit will be delivered with a 4mm
2
TERMINAL BLOCK and PARTITION PLATE already
fitted inside the battery compartment as shown.
If the unit is to be connected to any external
circuitry such as an external power supply or
SCADA system then the unit must be fitted with a
PARTITION PLATE and the main battery must be
removed.
Remove the lid and main PCB to gain access to the
battery compartment as described in section 4.1 MAIN BATTERY REPLACEMENT.
If a TERMINAL BLOCK and PARTITION PLATE are fitted already then the unit is ready for
connecting external circuits. One of three possible PCBs will be fitted at the TERMINAL PCB
position. Each PCB is described by one of the following sections: 5.1 STANDARD TERMINAL
PCB, 5.2 HEATER PCB OPTION or 5.3 MODBUS PCB OPTION. A TERMINAL BLOCK and
PARTITION PLATE will always already be fitted if a MODBUS or HEATER PCB is fitted at the
TERMINAL PCB position.
If a TERMINAL BLOCK and PARTITION PLATE are not fitted then follow the instructions below
to fit them.
1.
Observe how the wires connected to the transducer cable are routed inside the housing
before removing the 2x M4x25 cap screws holding the plastic battery compartment in place
and carefully withdrawing the entire assembly out of the main housing. While withdrawing
the battery compartment be very careful not to damage any existing wiring.
2.
Observe how the transducer cable is connected to the assembly and then disconnect.
3.
To fit the TERMINAL BLOCK, terminate the wires to the TERMINAL PCB as per section 5.1
STANDARD TERMINAL PCB.
4.
To fit the PARTITION PLATE simply slot into position in the battery compartment and lock
into place using the 2mm dowels provided.
5.
Re-connect the transducer cable and then carefully re-fit the battery compartment inside
the housing. While refitting the battery compartment be very careful not to damage any of
the wiring by initially positioning the wiring so that it points straight down into the housing
until the wiring has passed the housing lip and then repositioning the wiring from inside the
compartment so that it passes along one of the slots on the bottom of the battery
compartment. Ensure all wiring is safely located inside the enclosure and is not trapped
under the battery compartment
6.
Secure the battery compartment with the 2x M4x25 cap screws.
7.
Refer to section 5.1 STANDARD TERMINAL PCB to make the required external connections.
