Brochure

Applications

UP Series

Variable-speed pump

The Grundfos variable-speed pump is another product

with fully integrated control. The variable-speed

controller requires a 0-10/2-10 DC or 0-20/4-20 mA

control signal, which is user-selectable.

If desired, the manual-% dial allows the speed of the

pump to be manually adjusted and set by the user. The

speed of the pump may be manually adjusted anywhere

from min. to 100 %, but once set, remains fixed at that

speed.

In addition, the pump speed may be set as 0-100 % or

15-100 % by user.

The control also provides pump exercising for

10 seconds every 3 days and a power-up reset, which

runs the pump for 3 seconds at full speed, for all modes

of operation.

LEDs on the terminal box indicate operation (power is

applied) and performance (flashes slower or faster).

Fig. 4 Variable-speed pump

Variable-speed models include the following

• Pump with integrated variable-speed control

• Line cord, 6-ft (1.8 m) prewired

• Two gaskets.

Variable-speed standard features

• Variable-speed output modulation (external or

manual control)

• Offset-dial for fine-tuning of the signal input.

Fig. 5 Family curves for variable-speed pumps

TM03 9088 3307

Signal type Signal range

Voltage 0-10 VDC or 2-10 VDC, 5mA Max

Current 0-20 mA or 4-20 mA, 5 VDC Max

TM03 8843 2607

Position Description

a Min. curve for all models

b Max. UP 15-42 F/VS

c Max. UP 26-64 F/VS

d Max. UP 26-96 F/VS

0 4 8 12 16 20 24 28 32 36

Q [US GPM]

[ft]