Signal Relays" 1 And 2 ("Relay Outputs") - Grundfos LCSE Installation And Operating Instructions Manual

Possible functions, digital input/output 4
"Function if input"
(See details in section
Digital inputs"
)
7.7 "
• "Not active"
• "External stop"
• "Min."
• "Max."
• "External fault"
• "Alarm resetting"
• "Dry running"
• "Accumulated flow"
• "Predefined setpoint digit
3"
Activation delay (only for input)
Select the activation delay (T1).
It is the time between the digital signal and the activation of the
selected function.
Range: 0-6000 seconds.
Duration timer mode (only for input)
Select the duration timer mode. See fig. 52.
"Not active"
•
• active with interrupt (mode A)
• active without interrupt (mode B)
• active with after-run (mode C).
Select the duration time (T2).
It 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
Function,
mode A
T1 T2
Function,
mode B
T1 T2
Function,
mode C
T1
Fig. 54 Duration timer function of digital inputs
Factory setting
See section
10. Technical data.
"Function if output"
(See details in section
7.9 "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
T1
T1 T2
T2 T1 T2

7.9 "Signal relays" 1 and 2 ("Relay outputs")

Pump variant
LCSE
VLSE
The pump incorporates two signal relays for potential-free
signalling. For further information, see section
Function
You can configure the signal relays to be activated by one of the
following incidents:
"Not active".
•
• "Ready".
The pump can be running or is ready to run and no alarms are
present.
• "Alarm".
There is an active alarm and the pump is stopped.
• "Operating" ("Operation").
"Operating" equals "Running" but the pump is still in operation
when the pump is stopped due to low flow. See section
on page 48.
"Low-flow detection"
• "Running" ("Pump running").
The pump is running.
• "Warning".
There is an active warning.
"Limit 1 exceeded"
•
When this function is activated, the signal relay is activated.
See section
7.15 "Limit-exceeded
"Limit 2 exceeded".
•
When this function is activated, the signal relay is activated.
See section
7.15 "Limit-exceeded
• "External fan control" ("Control of external fan").
When you select "External fan control", the relay is activated if
the internal temperature of the motor electronics reach a
preset limit value.
Factory setting
See section
10. Technical data.
"Signal relays" 1 and 2
("Relay outputs")
●
●
10.2 Megging.
function".
function".
39