Installation planning Guide
Loop length / configuration
Loop loading - total number of addresses
Systems must be designed in accordance with the current edition of the Easicheck installation
planning guide, a copy of this guide should have been provided during the tender phase of the
project, further copies are freely available on request.
The maximum permitted loop length is 2 km measured from the near to the far terminals on
Panel Motherboard PCB. There is no minimum loop length limit . Any wiring spurs off the loop
must be included within the 2 km limit and installed via a purpose designed spur isolator. On
long loop runs, remember that the lengths of wiring rises and falls (between floors or down to
wall mounted luminaires) must be included, especially when taking loop lengths from plan
drawings.
Providing the recommended cable type and size is used, cable runs of less than 1KM should
not cause problems with volt drop and capacitance.
If more than 1KM of cable is to be connected then volt drop and capacitance calculations will be
required in line with the installation planning guide.
Data wiring must be in the form of a loop, starting and ending at the panel.
It is possible to add additional spurs from the main loop, any number of spurs can be included,
however spurs can only be connected via purpose designed spur isolators.
Spur isolators provide protection to the remainder of the loop in the event of a short circuit on
the spur, they also enable the automatic addressing process to function correctly when spur
wiring is used.
The total number of addresses per loop is 200 When designing systems its recommended that
allowance is made for future expansion, and therefore an initial limit of 200 devices per loop is
recommended.
You should not proceed with an Easicheck installation unless you are familiar with this
document.
Short circuit isolation
Short circuit isolators are incorporated into every Easicheck device, therefore, no further fault
protection is required. In the event of a single fault, none of the devices connected to the loop
will fail to operate as the fault will be isolated by the two adjacent devices.
Spur connected devices downstream of a cable fault will of course cease to function.
System Design Guidelines Equipment Compatibility
Additional instructions for electromagnetic compatibility
When used as intended this product complies with EMC Directive (89/336/EEC) and the UK
EMC regulations 1992 (SI 2372/1992) by meeting the limits set by the standards BS 5406 (Pts
2&3) 1988, EN50130-4 immunity and EN 61000-6-3 emission requirements.
The following installation guidelines must be followed.
1. External cables must be connected using the cable entries or knockouts provided.
2. When routing external cables inside the product they must be
a) Kept as short as possible
b) Routed close to the housing
c) Kept as far as possible from the electronics
Any modifications other than those stated in this manual, or any other use of this product may
cause interference and it is the responsibility of the user to comply with the EMC and Low
Voltage Directives.
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