www.miinet.com
Moore Industries-International, Inc.
- 18 -
User’s Manual
224-790-00K
May 2018
Section 3 - Installation and Wiring
Instructions in this section and others may require special precautions to ensure the safety of the
personnel performing the operations. Notes, Cautions and Warnings that may cause potential safety
issues are indicated throughout this manual by symbols, please refer to Page 3 of this manual to view
and familiarize yourself with these safety message symbols.
Mounting
The SPA
2
is housed in a DIN case that can be mounted on 35mm Top-Hat (EN50022) DIN-rail. To
mount the SPA
2
on a Top-Hat DIN-rail, seat the upper extrusion on the unit back panel over the top lip
of the rail and pivot downward until the housing locks into place. When mounting multiple units, like a
rack or cabinet, make sure to allow adequate vertical spacing for pivoting the units.
Removal
To remove the SPA
2
from DIN rail you will need a simple tool such as a straight blade screwdriver.
Insert the blade of the screwdriver into cavity at the bottom of the locking mechanism and rotate it.
This will release the locking mechanism from DIN rail and allow you to remove the SPA
2
.
Making the Electrical Connections
When installing any Moore Industries product, always follow all local regulations and standards for
grounding, shielding, and safety.
WARNING:
Terminals on this unit may be connected to hazardous voltages. Before making ANY
connections to this unit, always remove power from the loop or instrument power terminals.
Installation Category
All terminals are rated CAT I.
WARNING:
If this unit is used in a manner not specified by Moore Industries, the protection provided
by the equipment may be impaired.
Switches and Circuit Breakers
For SPA2 AC powered units, a switch or circuit breaker must be wired in series with the AC power
conductors. The switch or circuit breaker used must be located within three meters of the unit. The
circuit breaker or switch will only remove power to the unit, hazardous voltages may still be connected
to other terminals on the unit.
Power Supply Wiring
All power connections should be made with 14 or 16 AWG (2mm
2
or 1.3mm
2
) wire.
The end of each conductor should be stripped no more than 0.25in (7mm). The end of the stripped
wire should be tinned with solder, or inserted into a ferrule and crimped before being placed into a
terminal block.
Tighten the screws on the terminal block to 4.4 - 5.3 lbf/in
2
(0.5 - 0.6 N/m
2
).
Programmable Limit Alarm Trips
SPA
2
SECTION 3
