2TLC172188M0201, rev. H
11
www.abb.com/lowvoltage
2012-01-03
3.3
SM3 – Relay unit
Application
The SM3 is used to give electrical stop signals to machines and control systems. It has screw connectors for ease
of connection via standard connection wire.
Output contact status
The SM3 stop unit has two NC (normally closed) and two NO (normally open) relay contacts for connection to
existing equipment. A NO contact implies that the outputs close when a stop signal is given from Smart.
The units NO outputs are connected to the stop inputs of program stops, safety mats and contact rails, etc. The NC
outputs are connected to the stop inputs from gate switches, two-hand units, emergency stops, and three-position
devices, etc. The maximum switching capacity of the outputs is 6A, 250 VAC.
Connection
SM3 is connected to any of the I/O connectors on Smart Logger.
Stop signal
The SM3 gives stop signals to machines and starts the timing in Smart Logger when the output signal of SM3 is set
as the stop signal in Smart Manager.
Technical specifications
Manufacturer:
ABB AB / JOKAB SAFETY
Designation:
SM3
Article number:
2TLA070300R0300
Operating voltage:
Supplied from Smart Logger
Relay outputs:
2 NC
2 NO
6A/250 VAC
Size:
85 x 72 x 49 mm (L x W x H)
Weight:
0.2 kg
Colour:
Black/Yellow
