ABB AC500 V3 Hardware Manual page 214

Device specifications
I/O modules > Digital I/O modules
Terminal
16
17
18
19
20
The internal power supply voltage for the module's circuitry is carried out via the I/O bus
(provided by a communication interface module or a CPU). Thus, the current consumption from
24 V DC power supply at the terminals L+/UP and M/ZP of the CPU/communication interface
module increases by 5 mA per DO571.
The external power supply connection is carried out via the L+ (+24 V DC) terminal. The
negative pole of the external power supply is realized via the I/O bus. Therefore, the CPU/
communication interface module and the DO571 must have a common power supply.
For screw-type terminals only:
214
Signal
NO5
NO6
NO7
R4..7
L+
WARNING!
Risk of death by electric shock!
Hazardous voltages can be present at the terminals of the module.
Make sure that all voltage sources (supply voltage and process supply voltage)
are switched off before you begin with operations on the system.
WARNING!
For screw terminals only: Danger of death by electric shock!
The IP 20 protection degree is only provided if all terminal screws are tightened.
Tighten all screws of unused load terminals of relay outputs if voltages > 24 V
are connected to the relay group.
WARNING!
Removal/Insertion under power
The devices are not designed for removal or insertion under power. Because of
unforeseeable consequences, it is not allowed to plug or unplug devices with
the power being ON.
Make sure that all voltage sources (supply and process voltage) are switched
off before you
– connect or disconnect any signal or terminal block
– remove, mount or replace a module.
Disconnecting any powered devices while energized in a hazardous location
could result in an electric arc, which could create a flammable ignition resulting
in fire or explosion.
Make sure that power is removed and that the area has been thoroughly
checked to ensure that flammable materials are not present prior to proceeding.
The devices must not be opened when in operation. The same applies to the
network interfaces.
3ADR010278, 3, en_US
Description
Normally-open contact of the output NO5
Normally-open contact of the output NO6
Normally-open contact of the output NO7
Output common for signals NO4 to NO7
Process voltage L+ +24 V DC
2022/01/31