Yaskawa iQpump Controller User Manual - Manual (Page 46)

2.3 Control Wiring
46 YASKAWA TM.iQp.06 iQpump Controller 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)
2 k
P P
4 to 20 mA
iQpump
2 k Ω
+V +15 Vdc, 20 mA
A1 0-10 Vdc (20 k Ω)
A2 H3-08
4-20 mA (250 k Ω)
[0 to +10 V (20 k Ω)]
AC