24
6. Technical data
General electrical data
Pressure sensor input
Supply for pressure sensor 24 VDC
Relay output
* End of curve protection. The output is reduced after 60 seconds indicating that the pump is running at the
end of the curve. The output will resume to normal operation when the load is reduced or after a period of
further 60 seconds.
Fig. 22 Control terminals in CU 321
Supply voltage CU 321
1 x 208-240 V ±10%
3 x 208-240 V ±10%
Supply frequency 50/60 Hz ±3 Hz
Max. imbalance on
supply voltage
±2.0% of rated supply
voltage
Power factor 0.90 / at rated load
Number of mains on/off Max. 2 times/min.
Output frequency 25-60 Hz
Rated motor voltage 3 x 230 V
Terminal number 60
Current level 4-20 mA
Terminal number 12
Max. load 130 mA
Terminal number 1-3 (NC), 1-2 (NO)
Max. terminal load (AC)
on 1-3, 1-2
240 VAC, 1 A
Min. terminal load
on 1-3, 1-2
• 24 VDC 10 mA
• 24 VAC 100 mA
CU 321 3 hp 5 hp, 1-phase 5 hp, 3-phase
Output current continuous [A] 10.0 17.5 16.0
Output current max. (60 seconds) [A]* 12.0 21.0 19.2
Max. cable cross-section, motor [AWG/mm
2
] 10/4 10/4 10/4
Max. cable length, motor [ft/m] 1300/400 1300/400 1300/400
Input current 1 x 200-240 V [A] 23.0 34 –
Input current 3 x 200-240 V [A] 9.2 16.1 14.7
Max. cable cross-section, mains [AWG/mm
2
] 10/4 6/16 10/4
Weight excl. IP 21/NEMA 1 options [lbs/kg] 13.3/6.0 41.0/18.5 13.3/6.0
TM03 2628 4605
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