Digital Inputs/Outputs - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

Activation delay
Select the activation delay (T1).
This is the time between the digital signal and the activation of the
selected function.
Range: 0 to 6000 seconds.
Duration timer mode
Select the mode. See fig. 47.
• "Not active"
• active with interrupt (mode A)
• active without interrupt (mode B)
• active with after-run (mode C).
Select the duration time (T2).
This is the time which, together with the mode, determines how
long the selected function is active.
Range: 0 to 15,000 seconds.
T input > T1 + T2
T input > T1 + T2
Digital input
T input
T input
Mode A
T1 T2
Mode B
T1 T2
Mode C
T1
Fig. 47 Duration timer function of digital inputs
Factory setting
See section 29. Factory settings.

13.4 Digital inputs/outputs

You can select if the interface is to be used as input or output.
The output is an open collector and you can connect it to, for
example, an external relay or controller, such as a PLC.
+ 24V
DO 3/4
Fig. 48 Example of configurable digital inputs/outputs
To set a digital input/output, make the settings below.
Mode
You can set the digital input/output 3 and 4 to act as digital input
or digital output:
• "Digital input"
• "Digital output."
Function
You can set the digital input/output 3 and 4 to the functions stated
in the table below:
T input < T1 + T2
T input < T1 + T2
T input
T input
T1
T1 T2
T2 T1 T2
External
controller
Possible functions, digital input/output 3
"Function if input"
(See details in section
19. Digital input)
• Not active"
• "External stop"
• "Min."
• "Max."
• "User-defined speed"
• "External fault"
• "Alarm resetting"
• "Dry running"
• "Accumulated flow"
• "Predefined setpoint digit 2"
Possible functions, digital input/output 4
"Function if input"
(See details in section
19. Digital input)
• "Not active"
• "External stop"
• "Min."
• "Max."
• "User-defined speed"
• "External fault"
• "Alarm resetting"
• "Dry running"
• "Accumulated flow"
• "Predefined setpoint digit 3"
Activation delay (only for input)
Select the activation delay (T1).
This is the time between the digital signal and the activation of the
selected function.
Range: 0 to 6000 seconds.
Duration timer mode (only for input)
Select the duration timer mode. See fig. 47.
• "Not active"
• active with interrupt (mode A)
• active without interrupt (mode B)
• active with after-run (mode C).
Select the duration time (T2).
This is the time which, together with the mode, determines how
long the selected function is active.
Range: 0 to 15,000 seconds.
T input > T1 + T2
T input > T1 + T2
Digital input
T input
T input
Mode A
T1 T2
Mode B
T1 T2
Mode C
T1
Fig. 49 Duration timer function of digital inputs
Factory setting
See section 29. Factory settings.
"Function if output"
(See details in section
13.5 "Signal relays" 1 and 2
("Relay outputs"))
• "Not active"
• "Ready"
• "Alarm"
• "Operation"
• "Pump running"
• "Warning"
• "Limit 1 exceeded"
• "Limit 2 exceeded"
"Function if output"
(See details in section
13.5 "Signal relays" 1 and 2
("Relay outputs"))
• "Not active"
• "Ready"
• "Alarm"
• "Operation"
• "Pump running"
• "Warning"
• "Limit 1 exceeded"
• "Limit 2 exceeded"
T input < T1 + T2
T input < T1 + T2
T input
T input
T1
T1 T2
T2 T1 T2
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