Signal Relays" 1 And 2 ("Relay Outputs"); Analog Output - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

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

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
"Low-flow detection" on page 21.
• "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 12.8 Limit-exceeded
"Limit 2 exceeded".
•
When this function is activated, the signal relay is activated.
See section 12.8 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 29. Factory settings.

13.6 "Analog output"

The analog output enables the reading of certain operating data
to external control systems.
To set the analog output, make the settings below.
Output signal
• "0-10 V"
• "0-20 mA"
• "4-20 mA".
Function of analog output
• "Actual speed"
Signal range
[V, mA]
0
"0-10 V" 0 V
"0-20 mA" 0 mA
"4-20 mA" 4 mA
The reading is a percentage of the rated speed.
• "Actual value"
Signal range
[V, mA]
Sensor
"0-10 V" 0 V
"0-20 mA" 0 mA
"4-20 mA" 4 mA
28
18. Signal relays.
function.
function.
"Actual speed"
[%]
100 200
5 V 10 V
10 mA 20 mA
12 mA 20 mA
"Actual value"
Sensor
min max
10 V
20 mA
20 mA
The reading is a percentage of the range between the minimum
and maximum value.
• "Resulting setpoint"
Signal range
[V, mA]
0
"0-10 V" 0 V
"0-20 mA" 0 mA
"4-20 mA" 4 mA
The reading is a percentage of the external setpoint range.
• "Motor load"
Signal range
[V, mA]
0
"0-10 V" 0 V
"0-20 mA" 0 mA
"4-20 mA" 4 mA
The reading is a percentage of the range between 0 and 200 % of
the maximum permissible load at the actual speed.
• "Motor current"
Signal range
[V, mA]
"0-10 V" 0 V
"0-20 mA" 0 mA
"4-20 mA" 4 mA
The reading is a percentage of the range between 0 % and 200 %
of the rated current.
• "Limit 1 exceeded" and "Limit 2 exceeded"
Signal range
Output not
[V, mA]
"0-10 V"
"0-20 mA"
"4-20 mA"
This function is typically used for monitoring of secondary
parameters in the system. If the limit is exceeded, an output, a
warning or an alarm is activated.
• "Flow rate"
Signal range
[V, mA]
"0-10 V" 0 V
"0-20 mA" 0 mA
"4-20 mA" 4 mA
The reading is a percentage of the range between 0 and 200 % of
the nominal flow.
Factory setting
See section 29. Factory settings.
"Resulting setpoint"
[%]
100
10 V
20 mA
20 mA
"Motor load"
[%]
100
10 V
20 mA
20 mA
"Motor current"
[%]
0 100 200
5 V 10 V
10 mA 20 mA
12 mA 20 mA
"Limit-exceeded function"
Output active
active
0 V 10 V
0 mA 20 mA
4 mA 20 mA
"Flow rate"
[%]
0 100 200
5 V 10 V
10 mA 20 mA
12 mA 20 mA