ABB AC500 PLC - Page 325

Terminals Signal Description
1.0 to 1.7 I0 to I7 8 digital inputs
2.0 to 2.7 I8 to I15 8 digital inputs
3.0 to 3.7 C16 to C23 8 digital inputs/outputs
4.0 to 4.7 C24 to C31 8 digital inputs/outputs
CAUTION!
The process supply voltage must be included in the earthing concept (e. g.
earthing of the minus pole).
The internal power supply voltage for the module's circuitry is carried out via the I/O bus (pro-
vided by a bus module or a CPU). Thus, the current consumption from 24 VDC power supply at
the terminals L+/UP and M/ZP of the CPU/bus module increases by 2 mA per DC532.
The external power supply connection is carried out via the UP (+24 VDC) and the ZP (0 VDC)
terminals.
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.
NOTICE!
Risk of damaging the PLC modules!
Overvoltages and short circuits might damage the PLC modules.
– Make sure that all voltage sources (supply and process voltage) are
switched off before you begin with operations at the system.
– Never connect any voltages or signals to reserved terminals (marked with
---). Reserved terminals may carry internal voltages.
NOTICE!
Risk of influences to the connected sensors!
Some sensors may be influenced by the deactivated module outputs of DC532.
Connect a 470 W / 1 W resistor in series to inputs C24/C25 if using them as fast
counter inputs to avoid any influences.
Device Specifications
I/O Modules > Digital I/O Modules
2019/04/17 3ADR010121, 13, en_US 325