en – Original instructions
40
error condition is further removed (and the motor started accordingly) when the Lack Of Water
Switch closes again.
7.5.5 RS485 Interface Parameters
P50. BMS Comm Protocol [MOD, BAC]
This parameter (default value MOd) selects a specific protocol on the communication port:
possible settings are MOd (Modbus RTU) or bAC (BACnet MS/TP)
P51. BMS Comm Protocol – ADDRESS [1÷247] / [0÷127]
This parameter sets the desired address for the drive, when connected to any external device,
depending on the protocol selected in P50:
• If P50 = MOd, the address can be any value in the range 1÷247
• If P50 = bAC, the address can be any value in the range 0÷127
P52. BMS Comm Protocol – BAUDRATE [4.8, 9.6, 14.4, 19.2, 38.4, 56.0, 57.6 KBPS]
This parameter ( 4.8, 9.6, 14.4, 19.2, 38.4, 56.0, 57.6) (default value 9.6)sets the desired
baudrate for the communication port.
P53. BACNET Device ID Offset [0÷999]
This parameter (default value 002) sets hundreds, tens and units of the BACnet Device ID.
(BACnet Device ID default value = 84002)
P54. BMS Comm Protocol – CONFIGURATION [8N1, 8N2, 8E1, 8o1]
This parameter (default value 8N1) sets the length of the data bits, the parity and the length of
the stop bits.
7.5.6 Multipump Configuration Parameters
All these parameters affect MSE and MSY control modes.
P55. Multipump – Address [1÷3]
This parameter (default value 1) sets an address (1÷3) for each pump: the user shall manage it
following the subsequent rules:
• Each pump needs an individual pump-address (1÷3)
• Each address can only be used once.
P56. Multipump – Max Units [1÷3]
This parameter (default value 3) sets the maximum number of units that operate simultaneously.
P57. Multipump – Switch Interval [0÷250]
This parameter (default value 24) sets the switch interval expressed in [hours] for the cyclic change-
over: it allows an automatic change-over of the MASTER pump and the assist pumps.
As soon as the switch time is reached the next pump becomes MASTER and the counter restarts,
thus ensuring a balanced distribution of the operating hours amongst all pumps.
P58. Multipump – Actual Value Increase [0.0÷25.0BAR] / [0.0÷363PSI]
This parameter (in BAR or PSI, depending on P41, default value 0.35 bar), affects the calculation of
P02 to improve the Multipump control as described in the paragraph 10.3.
P59. Multipump – Actual Value Decrease [0.0÷25.0BAR] / [0.0÷363PSI]
This parameter (in BAR or PSI, depending on P41, default value 0.15 bar), affects the calculation of
P02 to improve the Multipump control as described in the paragraph 10.3.
P60. Multipump – Enable Speed [P27÷P26]
This parameter (default value depends on the hydraulic) sets the speed that a pump shall reach
before starting the next assist pump, after a system pressure drops below the difference: P02 – P59.
To Next Page
