307UM0200_01 May 2016
PD27x User Manual
Page 14 of 30
5. Installation guide
Op
�
mum func
�
oning of the detector module is largely dependent on factors associated with the induc
�
ve sensor loop
connected to it. These factors include choice of material, loop configura
�
on and correct installation prac
�
ce. A
successful induc
�
ve loop vehicle detec
�
on system can be achieved bearing the following constraints in mind, and strictly
following the installa
�
on instruc
�
ons. The detector must be installed in a convenient weather proof loca
�
on as close as
possible to the loop.
5.1 Product Safety Requirements
•
i) WARNING:
The unit must be GROUNDED (earthed)
.
•
ii) WARNING:
Disconnect the power before working on the unit
.
•
iii) WARNING:
On 120 V
AC
and 230 V
AC
models a readily accessible disconnect device
must be incorporated into the mains wiring (as per EN60950-1:2005 Sec
�
on
1.7.2.2).
•
iv) WARNING:
On all models the power supply to the unit MUST have short circuit protec
�
on
and over current protec
�
on installed at the power supply source (As per EN 60950-
1:2005 sec
�
on 1.7.2.3). Typically this will be a 5 Amp Magne
�
c Circuit Breaker for
AC models and a fuse for DC models.
•
v) WARNING:
This product must be installed in an enclosure as the IP ra
�
ng of the detector
is IP 30.
•
vi) WARNING:
No user serviceable parts inside. No internal se
�
ngs.
Warranty void if cover removed.
•
vii) WARNING:
Only use
CE
approved 11 pin relay bases such as Nortech Part No.
CTR119090 or equivalent.
As an alternative to the 11 pin relay base, Nortech has an 11 pin wiring harness,
Nortech Part No. 302FT0041, which can only be used in SELV voltage (less than 60
V
DC
or less than 42 V
AC
) applications.
5.2 Operational Constraints
5.2.1
Environmental Factors to Consider
Even though the PD27x Series parking detectors are housed, the system integrator MUST ensure that the detector is
installed in a housing/fire enclosure to protect it from the environment.
The PD27x Series parking detectors are rated to operate from -40°C to +80°C but the rate of temperature change MUST
not exceed 1°C per minute. This system integrator MUST ensure that the housing used complies with this rate of
temperature change requirement.
For installa
�
on
Outdoors
refer to Appendix B.
For addi
�
onal informa
�
on on
Environmental Factors
refer to the sec
�
on “Environmental Influences to Design
Parameters” in the “Loops and Loop Installations” Manual, Nortech Document No. MKT05.
