Grundfos LC 231 Manual Del Usuario página 28

Enclosure class
IP54 / NEMA 3R.
Mains input terminal
Current: See nameplate.
IEC stranded or solid 0.5 to 16 mm
UL stranded or solid AWG 20 to 6.
Screw torque: 1.2 Nm.
Stripping length: 12 mm (0.47").
Pump output terminal
Current: See nameplate.
2
IEC stranded 0.75 to 2.5 mm .
2
IEC solid 1.0 to 4.0 mm .
UL stranded or solid AWG 18 to 12.
Screw torque: 1.2 Nm.
Alarm relay terminals
250 VAC nominal and 24 VDC nominal.
Nominal current 10 mA to 2 A AC/DC.
D300 pilot duty (auxiliary relay).
UL: solid AWG 28-12, stranded AWG 30-12.
IEC: solid or stranded 0.2 - 2.5 mm
Stripping lenght: 7-8 mm (0.28"-0.31").
Screw torque: 0.5 Nm.
Relay output 1 and 2
Minimum contact load: 10 mA AC/DC.
Potential-free changeover contacts.
IEC: solid or stranded 0.2 - 2.5 mm
UL: solid AWG 28-12, stranded AWG 30-12.
Stripping length: 7-8 mm (0.28"-0.31").
Screw torque: 0.5 Nm.
Digital input
IEC: solid or stranded 0.5 - 2.5 mm
2
1.5 mm .
UL: solid or stranded AWG 28-12.
Stripping length: 5-6 mm (0.19"-0.24").
Low logic level below 1.8
V.
Digital input mode
High logic level higher
than 2.7 V.
28
DIO terminals
Digital input mode
2
.
Digital output mode
DIO terminals
Digital input mode
Digital output mode
2
.
PTC
IEC: solid or stranded 0.2 - 2.5 mm
UL: solid AWG 28-12, stranded AWG 30-12.
Stripping length 7-8 mm (0.28"-0.31").
Screw torque: 0.5 Nm.
2
.
Trip resistance: greater than 2.2 kΩ +/-5 %.
Automatic reset resistance: less than 1 kΩ +/-5 %.
Pt100 or Pt1000 inputs (Pt)
Use Pt100 for short wires.
Use Pt1000 for long wires.
2
, flexible 0.25 -
Solid or stranded wire: AWG 28-12 or maximum 2.5
2
mm .
IEC: solid or stranded 0.5 - 2.5 mm
1.5 mm
UL: solid or stranded AWG 28-12.
Stripping length: 5-6 mm (0.19"-0.24").
Power supplies, +24 V
Output voltage: 24 VDC - 10 % to + 10 %.
Maximum 250 mA on each terminal.
Weight
See nameplate.
Altitude
Maximum 2000 m (6562 ft).
Pollution degree
Category 3.
Low logic level below 1.8
V.
High logic level higher
than 2.7 V.
Open collector.
Current sink capability:
maximum 75 mA, no
sourcing.
Overcurrent protected.
Low logic level below 1.8
V.
High logic level higher
than 2.7 V.
Open collector.
Current sink capability:
maximum 75 mA, no
sourcing.
Overcurrent protected.
2
.
2
, flexible 0.25 -
2
.