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3 control wiring, Control wiring, Iqpump – Yaskawa iQpump Drive User Manual User Manual

Page 40: Control circuit wire sizes

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2.3 Control Wiring

40

YASKAWA TM.iQp.01 iQpump Drive User Manual

2.3

Control Wiring

Control Circuit Wire Sizes

The auto mode setpoint (speed command) field wiring connection is made to iQpump drive terminals A1 or A2 (signal positive), AC

(signal common) and G (shield). Keep this lead length as short as possible to maintain signal quality. Insulated twisted shielded pair wire
(2 conductor # 18 ga, Belden 8760 or equivalent) is required. Do not run these wires in the same conduit as other AC power or control

wires. The shield must be connected on this end only, stub and isolate the other end. The A2 signal employed is 4 to 20 mA with

parameter H3-08 set for “2: 4 - 20 mA.” For 0 to 10 Vdc, parameter H3-08 is set for “0: 0 - 10 Vdc” and the iQpump control board DIP
switch S1-2 must be in the OFF position. (See

Figure 2.4

).

For remote operation, keep the length of the control wiring to 50m or less. Separate the control wiring from high-power lines (input

power, motor leads or relay sequence circuits) to reduce noise induction from peripheral devices.

When setting speed commands (frequency references) from an external speed potentiometer (and not from the Digital Operator), use

shielded twisted-pair wires and ground the shield to terminal E(G), as shown in

Figure 2.3

. Terminal numbers and wire sizes are shown

in

Table 2.7

.

Figure 2.3 Analog Input Terminal Configuration

Table 2.7 Terminal Numbers and Wire Sizes (Same for all iQpump Drives)

Terminals

Terminal

Screws

Tightening

Torque

lb-in

(N•m)

Possible Wire

Sizes

AWG (mm

2

)

Recommended Wire

Size AWG (mm

2

)

Wire Type

S1, S2, S3, S4, S5, S6, S7

SN, SC, SP, +V, A1, A2, AC, MI,

M2, M3, M4, MA, MB, MC, FM,

AC, AM, R+, R-, S+, S-, IG

Phoenix

type

*3

4.2 to 5.3

(0.5 to 0.6)

Stranded wire:

26 to 16

(0.14 to 1.5)

18

(0.75)

• Shielded, twisted-pair wire

*1

• Shielded, polyethylene-covered, vinyl sheath

cable

E(G)

M3.5

7.0 to 8.8

(0.8 to 1.0)

20 to 14

(0.5 to 2

*2

)

12

(1.25)

*1.Use shielded twisted-pair cables to input an external speed command.
*2.Yaskawa recommends using straight solderless terminals on digital inputs to simplify wiring and improve reliability.
*3. Yaskawa recommends using a thin-slot screwdriver with a 3.5 mm blade width.

E(G )

+V +15V D C , 20m A

A 1 0-10V D C (20K )

A 2 H 3-08

4-20m A (250K )

[0 to +10V (20K )]
A C

E7

Ω

Ω

Ω

4 to 20m A

P

P

External

Frequency

Reference

2k

Ω

2k

Signal

Terminal Connections

0-10 Vdc

A1 to AC

4-20 mA

or

0-10 Vdc

A2 to AC

(P = Pair)

External

Frequency

Reference

E (G)

2k

P

P

4 to 20m A

iQpump

2kΩ

+V +15 Vdc, 20 mA

A1 0-10 Vdc (20k Ω)

A2 H3-08

4-20m A (250K Ω)
[0 to +10V (20K Ω)]

AC