Signal Relays" 1 And 2 ("Relay Outputs"); Analog Output; Relay - Grundfos CRE Notice D'installation Et De Fonctionnement

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

Pump variant
CME
CRE, CRIE, CRNE, CRKE,
SPKE, MTRE
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 50.
• "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.

7.10 "Analog output"

Pump variant
CME
CRE, CRIE, CRNE, CRKE, SPKE, MTRE
Whether the analog output is available or not, depends on the
functional module fitted in the pump:
Function (terminal)

"Analog output"

* See section 5.2.1 Identification of functional
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".
42
"Signal relays" 1 and 2
("Relay outputs")
●
●
10.2 Megging.
function".
function".
"Analog output"
●
●
FM 200* FM 300*
(standard) (advanced)
- ●
module.
"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
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
"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
"Resulting setpoint"
[%]
100
10 V
20 mA
20 mA
"Motor load"
[%]
100 200
5 V 10 V
10 mA 20 mA
12 mA 20 mA