765-4102/0100-0000
Planning
Product manual | Version: 2.1.0
35
8PORT IOL-B FLD PN DC 24V 2.0A
• Power supply of all connected sensors/actuators and hubs via 1L
• Power supply of successive devices via 1L
Supply cable 2:
• Power supply of all connected sensors/actuators and hubs via 2L
• Power supply of successive devices via 2L
Rules
In addition to the consumption of the connected devices, rules for the maximum load ca-
pacity must be followed. Comply with the following rules to prevent damage to the prod-
uct:
• Supply voltage input X31 (PWR IN) and supply voltage input X32 (PWR OUT)
– Rule 1: Take maximum load capacity of each connection contact (pin) into ac-
count
– Rule 2: Take 1L and 2L current feedthrough into account
• Ports X01, X02 etc.
– Rule 3: The sum of the currents through pins 1, 2 and 4 must not exceed the
maximum permissible current of pin 3, since all the currents of pins 1, 2 and 4 re-
turn through pin 3.
Rules 1 and 2: Supply Input X31 and Output X32
The currents for the electrically isolated supply cables 1 and 2 should be considered sep-
arately. The two supply cables 1 are defined as follows:
• Supply cable 1 corresponds to the current flow path starting from pin 1 (signal 1L+) of
supply voltage connection PWR IN (X31) through the product to pin 3 (signal 1L-) of
PWR IN. This is shown in blue in the current flow figure in section
8
• Supply cable 2 corresponds to the current flow path starting from pin 4 (signal 2L+) of
supply voltage connection PWR IN (X31) through the product to pin 2 (signal 2L-) of
PWR IN. This is shown in red in the current flow figure in section
8
The following rule applies to both supply cables:
Rule 1: Upper limit of 16 A for current in the entire supply cable (1 or 2)
An upper limit of 16 A applies to the total current in a supply cable. If this upper limit is ex-
ceeded, there is a risk of destruction of or damage to the product or other products con-
nected to it if the safety measures are not taken.
Also observe the derating, i.e. the maximum current as a function of the surrounding air
temperature. In this regard, see section
8
.
The following partial currents contribute to the total current in supply cable 1:
1. The current I
logic
for powering the product’s internal electronics (the product is pow-
ered via supply cable 1)
2. The currents I
X0i_1L
for powering the connected products, sensors and actuators
through pins 1, 2 and 4 (for each port i)
3. The current I
X32_1L
that flows through the supply voltage output PWR OUT (X32) to
other connected products (current feedthrough)
The following partial currents contribute to the total current in supply cable 2: