SICK GM35 - Page 19

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8009441/YN36/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
PROJECT PLANNING INFORMATION
Purge air unit
see “Installation prepara-
tion for the purge air unit”,
page 24
Fitting location
selection
▸ Plan installation location on the duct in immediate vicinity
(5 m) of the GM35 SR-unit.
▸ Keep purge air hoses to the respective purge air fixture
(SR-unit, reflector) as short as possible (pressure drop per
meter, approx. 1.2 hPa/1.2 mbar).
▸ Ensure secure cable laying.
▸ Ensure dry and, whenever possible, dust-free intake air on
the purge air unit, use a preliminary filter when necessary.
▸ The intake air temperature should be between 0 and
55 °C. Heat the purge air when T < 0 °C; see air heater
option.
▸ For installation outdoors, plan a weatherproof cover.
Evaluation unit
see “Installation prepara-
tion for the evaluation
unit”, page 25
Determine the fitting
location
▸ Install the evaluation unit at an easily accessible location,
preferably at the measuring point. If necessary, install it at
a distance from the measuring point, whereby the total
length of all the CAN bus connections in the GM35
measuring system must not exceed 1000 m.
● Ambient temperature between –20 °C and +55 °C.
● During continuous operation –40 °C.
Options for CAN bus
wiring
▸ Is the 4 m CAN bus cable sufficient for the connection
between EvU and SR-unit at the selected installation
location?
If not, select a suitable cable (see
see page 11):
▸ If the distance is less than 19 m: Plan a 15 m prefabricated
CAN bus cable with plug-in connectors.
▸ For larger distances: Use CAN bus terminal boxes and a
cable provided by the customer.
Assembly platform Specify the assembly
platform
▸ Provide a suitable working platform for installation on the
outside of a duct/stack.
▸ The fitting location of the GM35 SR-unit should be about
1.3 to 1.5 m above the platform.
▸ The platform must be large enough, secured and positioned
so that all device parts can be accessed without danger.
This is especially important when inserting and removing
the SR-unit or reflector.
Accident prevention Applicable (national) regulations on accident prevention must be observed.
Always observe and follow the relevant safety information provided for the
corresponding texts in these Instructions.
Topic Task Measure/determination
Table 1: Project planning checklist