www.miinet.com
Moore Industries-International, Inc.
- 19 -
User’s Manual
225-748-01L
February 2017
Programmable Current/Voltage Safety Trip Alarm
STA
HLPRG
SEC
TION 3
Equipment Ratings
Contact Relays
The STA does not generate hazardous voltages but can switch outputs up to 3A at up
to 250Vac or 30Vdc on its relay contacts. Products connected to the STA should be
designed to receive this type of input.
Analog Output
The STA does not generate hazardous voltages, it provides a low current (4-20mA) or
voltage (1-5V) input and a 4-20mA output. Products connected to the STA should be
designed to receive this type of input.
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 STA 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
).
Protective Earth Conductor
The Protective Earth Conductor shall be of equal or larger size wire than the other two power
conductors. The Protective Earth Conductor shall be the first conductor connected to the unit
when the unit is being wired. It shall be the last conductor removed when the unit is being
un-wired.
Input/Output Wiring
The Input/Output connections can be made with 14 to 24 AWG (2.5mm
2
to 0.2mm
2
) wire. The
end of each conductor should be stripped no more than 0.25in (7mm). Tighten the screws on the
terminal block to 4.4 - 5.3 lbf/in
2
(0.5 - 0.6 N/m
2
).
