TECO F33 Series, Instruction Manual, Page: 47 / 192

44 Main Features
7.6.7 Wiring Alternating Master
Fig. 48 and Fig. 49 show the relay functions
MasterPump1- 6 and SlavePump1-6. The Master and
Additional contactors also interlock with each other to
prevent dual powering of the pump and damage to the
inverter. (K1M/K1S, K2M/ K2S, K3M/K3S). Before
running, the F33 will select a pump to be Master,
depending on the pump run times.
Fig. 53 Power connections for Alternating MASTER circuit
with 3 pumps
Fig. 54 Control connections for Alternating MASTER circuit
with 3 pumps
CAUTION: The wiring for the Alternating
Master control needs special attention and
should be wired exactly as described here,
to avoid destructive short circuit at the output of the
inverter.
!
K1S
B2:R1
Slave
Pump1
K1M
B1:R1
Master
Pump1
~
N
(NG_50-PC-11_3)
K2M
B1:R2
Master
Pump2
K2S
B2:R2
Slave
Pump2
K3M
B1:R3
Master
Pump3
K3S
B2:R3
Slave
Pump3
K1S K1M K2M K2S K3M K3S