Installation
SLP devices are mounted as follows (see Fig. 1)
a) Hook the earthing clamp at the unprotected side of the base of the SLP unit over one flange
of the DIN rail (1).
b) Press down the protected area end of the SLP unit firmly until it clicks into position (2).
c) Check that the SLP unit is securely clamped into place on both field and protected sides.
Note: It is essential to check that the earth connection has been made securely.
d) To remove, insert the blade of a
screwdriver down the protected
side of the SLP unit (3) and lever the
handle gently towards the SLP unit (4)
and upwards to disengage the spring,
freeing the unit from the rail (5).
e) When connecting the signal wires, if
using an electric screwdriver the
torque setting should be between
0.4 and 0.6Nm.
(1)
Fig. 1
- Mounting/removing a SLP unit
(4)
(5)
(2)
(3)
Mounting
Removal
SLP Installation Guide
Unprotected side =
Controller/Power supply
Top connectors
+
+
-
The unit is polarised, as shown above.
For full surge protection the DIN rail mounting must be earthed (via the DIN rail or the
screw connection).
For full protection the unit must be connected so that the surge is expected on the
unprotected side. The unit will then protect the devices on the protected side.
-
1 2
3 4
SLP07D
5 6
Protected
side = Equipment
-
7 8
+
-
+
CAUTION:
For use in an envir onment, SLP must be mount ed in a suitable enclosure.
Earthing
Corr ect ear thing pr ocedu res ar e esse ntial for ef fect ive and safe su rge protection. Each SLP
unit has its earth connection made onto the DIN rail or screw terminal. Connection to the
surge earth is made using an ETL earth terminal clamped to the DIN rail at either, or
preferably both ends of a row of SLP surge protectors.
a) Locate the earth terminal next to the SLPs at the end of the row or
connect directly to the screw termi nal on the ground foot located
on the unprotected side.
b) Hook the earthing clamp over the flange of the DIN rail. Press down
the other end of the terminal until it locates over the DIN rail. Firmly
tighten the clamping screw in the central hole on top of the terminal.
Check that the earth terminal is properly clamped to ensure that the
earth connect ion has been made securely.
c) The earth connection of the SLP should be made to the earth reference
of the equipment to be protected. In practice, the earth connection is
usually made to the OV reference earth box in the equipment cubicle.
The earth connection should be
≥
Note:
This may require re-routing of the system earthing and the installation instructions should
be checked carefully.
2
2.5mm .
The overall earthing system is critical to effective operation of the surge protector.
≤
1 metre in length and use wire size
SLP Series SPD
+ Signal
1
2
- Signal
3
+ Signal
4
- Signal
DIN Rail Foot
SLP07D
Working Voltage 7Vdc 16Vdc 30Vdc
Maximum Continuous Operating Voltage 8Vdc 18Vdc 32Vdc
Rated Load Curre nt 1.50A
Loop Resistance 2
Maximum Surge Current 20kA (8/20 s)
+ Signal
5
- Signal
6
+ Signal
7
- Signal
8
SLP16D SLP32D
Ω
µ
Loading...