English (GB)
41
8.7.20 Pump start and stop speed (4.2.8)
Description
The function controls the starting and stopping of pumps. There
are two options:
1. Use calculated speed: This function ensures that the optimum
number of pumps always run at a desired duty point, in terms
of energy consumption. CU 352 estimates the pump data,
which is required to calculate the optimal number of pumps
and their speed. This requires that the differential pressure of
the pump and the
power of each pump are measured. The
differential pressure can be measured either by a sensor or
separate pressure sensors on the inlet and outlet side. If
calculated speed has been selected, CU 352 ignores the
percentages set.
2. Use fixed speed: The pumps are started and stopped at
speeds set by the user.
1. Use calculated speed
Fig. 59
Use calculated speed
Setting via the operating panel
• Settings > Pump cascade control > Pump start and stop speed
> Use calculated speed > Start pump data estimation.
2. Use fixed speed
Fig. 60
Use fixed speed
Setting via the operating panel
• Settings > Pump cascade control > Pump start and stop
speed.
• Select: Use fixed speed.
• Set: Start next pump at this speed > 1 -> 2.
1. Set the speed as percentage.
2. Set the other pumps in the same way.
3. Select: Instant pump stop at > 1 -> 0.
4. Set the speed as percentage.
5. Set the other pumps in the same way.
Factory setting
The function is set to calculated speed.
8.7.21 Min. performance (4.2.9)
Fig. 61
Min. performance
Description
The function ensures circulation in a system. Note that the stop
function, if enabled, can influence this function. See section
. Examples:
• If zero pumps have been selected, the stop function can stop
the pump if there is no or a very small consumption.
• If pumps have been selected, the stop function will not be
active.
Setting via the operating panel
• Settings > Pump cascade control > Min. performance.
1. Set:
• Number of pumps
• Speed.
Factory setting
The number of pumps is set to zero. The speed in closed loop is
set to 25 %.
Содержание Control MPC 2000 Series
Страница 1: ...Control MPC Installation and operating instructions GRUNDFOS INSTRUCTIONS...
Страница 2: ...2...
Страница 394: ...CN 394 8 3 CU 352 8 4 1 15 6 PV SP H G A MPC E I GENI RS 485 B D E F A B C D E F G H I C 64...
Страница 397: ...CN 397 8 4 8 1 2 6 14 8 7 67 4 4 9 1 2 8 4 9 1 2 7 15 8 4 10 1 6 1 3 1 10 16 1 PI PI 0 100 MPC E EC MPC E EC...
Страница 401: ...CN 401 8 5 5 2 1 4 28 PI PI 8 5 6 1 6 2 1 4 1 2 1 4 6 29 1 6 1 2 3 8 5 7 2 1 4 7 30 100 1 2 1 2...
Страница 403: ...CN 403 8 6 3 3 2 24 33 1 2 214 8 6 4 3 3 34 8 7 4 35 PI S 1 2 CU 352 GENIbus 1 2 3 8 7 1 4 1 36 PI S...
Страница 405: ...CN 405 8 7 3 4 1 2 38 2 7 1 1 CU 352 2 7 8 7 4 2 7 4 1 2 1 4 1 2 7 39 2 7 1 2 8 7 28 4 3 7 3 4 5 6...
Страница 407: ...CN 407 8 7 7 4 1 4 43 2000 2000 0 100 8 7 30 4 3 8 1 AI 2 3 AI 1 CU 352 8 7 8 4 1 5 44 1 2 3 1 2 3 4...
Страница 411: ...CN 411 8 7 16 4 2 3 55 1 0 8 7 17 4 2 4 56 24 CU 352 1 2 3 03 00...
Страница 412: ...CN 412 8 7 18 4 2 5 57 1 2 3 4 8 7 19 4 2 7 58 8 7 20 4 2 8 1 2 3...
Страница 416: ...CN 416 2 Qmin 69 1 8 7 28 4 3 7 2 3 4 70 1 8 7 30 4 3 8 2 3 4 2 71 5 3 15 0 25 0 6 10 25 30 50...
Страница 423: ...CN 423 8 7 39 4 3 14 1 87 MPC S MPC S 100 25 100 8 7 40 4 3 14 2 88 100 100 1 70...
Страница 428: ...CN 428 8 7 49 4 3 25 100 HVAC SP Setpoint alternation Kp Ti 1 2 3 4 5 8 7 50 4 3 25 1 101 1 6 1 AI...
Страница 430: ...CN 430 8 7 53 4 3 27 1 4 104 1 4 1 2 1 4 1 1 2 2 3 4 8 7 54 4 3 28 105 8 1 2 3...
Страница 432: ...CN 432 8 7 57 4 4 1 108 8 7 58 4 4 1 1 8 7 59 4 4 1 2 8 7 60 4 4 1 3 8 7 58 4 4 1 1 109 CU 352 5 8 7 28 4 3 7 1 2 3...
Страница 433: ...CN 433 8 7 59 4 4 1 2 110 8 7 30 4 3 8 1 2 3 4 5 8 7 60 4 4 1 3 111 8 7 30 4 3 8 1 2 3 3 4 5...
Страница 434: ...CN 434 8 7 61 4 4 2 112 CU 352 1 2 3 8 7 62 4 4 3 113 CU 352 8 7 14 4 2 1 1 2...
Страница 435: ...CN 435 8 7 63 4 4 4 114 CU 352 CU 352 CU 352 8 7 28 4 3 7 1 2 3 4 5 8 7 64 1 4 4 5 4 4 6 115 1 CU 352...
Страница 437: ...CN 437 8 7 66 4 4 8 117 118 1 2 3 2 4 5 6 7 8 9 8 7 67 4 4 9 119 MPC E 1 3600 1 2 TM03 9206 3607 4 s 1 2 3 4 5 5 3 2 1...
Страница 438: ...CN 438 8 7 68 4 4 10 120 1 2 8 7 69 4 4 11 121 CU 352 NRV NRV 1 2 G H I J MGE MPC E...
Страница 439: ...CN 439 8 7 70 1 2 4 4 13 4 4 14 122 1 2 CU 352 1 2 3 4 123 1 2 3 4 124 1 2 3 4 5 125...
Страница 440: ...CN 440 126 1 2 1 2 3 2 4 5 6 7 8 4 4 13 1 2 8 7 71 CU 352 4 5 127 CU 352 CU 352 CU 352 15 4 5 1 GENIbus...
Страница 443: ...CN 443 8 7 75 4 5 4 132 CU 352 1 2 3 4 1234 8 7 76 4 5 5 133 CU 352 Internet 8 8 1 CU 352 1 4 4 5 1 134 8 1 1 1 IP...
Страница 447: ...CN 447 9 9 1 9 2 CU 352 CU 352 12 10 5 0 20 mA 4 20 mA CU 352...
Страница 452: ...Arabic AR 452 20 0 20 4 CU 352...
Страница 455: ...Arabic AR 455 CU 352 GENIbus 8 8 8 8 TM05 3235 1012 GENIbus GENIbus Grundfos CIU GENIbus 1 3 9 139...
Страница 518: ...Arabic AR 518 O26 O27 O28 CUE EC Control MPC LC Control MPC F E B A Cont r ol MPC...