Chapter 3: Connecting Emergency Stop Button or Fire Alarm Control
Firefighter Gateway Installation Guide MAN-01-00113-1.2
Chapter 3: Connecting Emergency Stop
Button or Fire Alarm Control
Overview
An external emergency stop button (not supplied by SolarEdge) should be connected to the firefighter
gateway, in order to shut down the PV system in case of emergency. Pressing the emergency stop button
starts the shutdown sequence of the PV system. Preferably, use a button with a locking feature that stays
mechanically locked in the off position until you turn it clockwise a quarter turn to unlock and release it.
The firefighter gateway can also be connected to a fire alarm control unit that has a relay output. The relay
output of the fire alarm control has the same functionality as the button. You can connect both a stop
button and a relay together to the same firefighter gateway, or two stop buttons or two relays.
Figure 7: Example: Emergency Stop Button and Fire Alarm System Connection
The emergency stop button(s) or relay(s) connect to the L1 or L2 ports on the Control connector of the
gateway, between 5V and L1 / L2/both. In the following sections, the instructions refer to L1, however
applies to L2 as well.
Figure 8: Emergency Stop Button Connection
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