English (US)
18
15.5 Cable length
15.6 Fuses and cable cross-section
15.6.1 Cable cross-section to signal terminals
15.6.2 Non-UL fuses and conductor cross-section to mains
and motor
1)
Screened motor cable, unscreened supply cable.
15.6.3 UL fuses and conductor cross-section to mains and
motor
1)
Screened motor cable, unscreened supply cable.
15.7 Inputs and outputs
15.7.1 Mains supply (L1, L2)
15.7.2 Motor output (U, V, W)
1)
Output voltage in % of supply voltage.
15.7.3 RS-485 GENIbus connection
The RS-485 circuit is functionally separated from other central
circuits and galvanically separated from the supply voltage
(PELV).
15.7.4 Digital inputs
All digital inputs are galvanically separated from the supply
voltage (PELV) and other high-voltage terminals.
15.7.5 Signal relays
1)
IEC 60947, parts 4 and 5.
The relay contacts are galvanically separated from other circuits
by reinforced insulation (PELV).
Maximum length, screened motor cable 500 ft (152 m)
Maximum length, unscreened motor cable 1000 ft (305 m)
Maximum length, signal cable 1000 ft (305 m)
Warning
Always comply with national and local
regulations as to cable cross-sections.
Maximum cable cross-section to signal
terminals, rigid conductor
AWG 14
Maximum cable cross-section to signal
terminals, flexible conductor
AWG 18
Minimum cable cross-section to signal
terminals
AWG 20
Typical shaft
power P2
[Hp]
Maximum
fuse size
[A]
Fuse
type
Maximum conductor
cross section
1
AWG
[mm
2
]
240gG710
340gG710
580gG710
Typical shaft
power P2
[Hp]
Maximum
fuse size
[A]
Bussmann
RK1
Maximum conductor
cross section
1
[AWG]
240KTN-R40 7
340KTN-R40 7
580KTN-R80 7
Supply voltage 200-240 V ± 10 %
Supply frequency 60 Hz
Maximum temporary imbalance between
phases
3 % of rated value
Leakage current to earth > 3.5 mA
Number of cut-ins Max. 1 time/min.
Do not use the power supply for switching the
CU331SP on and off.
Output voltage 0-100 %
1)
Output frequency 0-60 Hz
Switching on output Not recommended
Terminal number 68 (A), 69 (B), 61 GND (Y)
Terminal number 18
Voltage level 0-24 VDC
Voltage level, open contact > 19 VDC
Voltage level, closed contact < 14 VDC
Maximum voltage on input 28 VDC
Input resistance, R
i
Approx. 4 kΩ
Relay 01, terminal number 1 (C), 2 (NO), 3 (NC)
Relay 02, terminal number 4 (C), 5 (NO), 6 (NC)
Maximum terminal load (AC-1)
1)
240 VAC, 2 A
Maximum terminal load (AC-15)
1)
240 VAC, 0.2 A
Maximum terminal load (DC-1)
1)
50 VDC, 1 A
Minimum terminal load
24 V DC 10 mA
24 V AC 20 mA
C Common
NO Normally open
NC Normally closed
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