EBARA HERTZ ONE Manual página 20

7 CONNECTION REFERENCES AND TERMINALS
FU1 16 A Gg mod. 10x38 type inverter short circuit protection fuses.
When triggered the function of the inverter supplied pump is prevented and the remaining circuits and electric pumps
remain activated.
Turn off the power supply and wait 3 minutes for the internal voltage to zero before performing any maintenance
operations.
FU2 10 A AM Mod. 10x38 type fuses against the short circuit of the second and third electric pump motor power supply, only for
HO M 2x1,1M,
FU3
NOTE: FU3 for H.O. M2x1,1MX is used to protect the ausiliary circuits of Exchange inverter electronic board.
When triggered the function of the electric pump is prevented but not the panel. Turn off the power supply and wait 3
minutes for the internal voltage to zero before performing any maintenance operations.
FU4
1 A quick-break mod. 5x20 type fuse against inverter short circuits.
When triggered the function of the panel is prevented and all signals are switched off.
Turn off the power supply and wait 3 minutes for the internal voltage to zero before performing any maintenance
operations.
ALARM
Terminals for the remote signalling of panel alarms as indicated in tab. 9.3.
Contact characteristics: (5 A 250 V N.O – N.C. contacts).
1– 2--3
REMOTE Unit start and stop remote control connection terminals. (If used, remove the standard by-pass jumper between terminals 4
and 5).
CONT.
Input characteristics: 24 V ac. 0.04 A.
4 – 5
PR.TR. PR.TR1 pressure transmitter connection terminals to control the speed of the P1 electric pump and pressure of the system.
Make sure the correspondence is respected:
6 - 7- 9
Terminal 6 power supply
Terminal 7 signal input
Terminal 9 for the ground connection of the transducer cable shield.
Input characteristics: 15 V dc. 4-:-20 mA.
P.S.M2
PS1 pressure switch connection cables for the control of electric pump P2.
Input characteristics: 24 V ac. 0.5 A;
12– 13
P.S.M3
PS2 pressure switch connection cables for the control of electric pump P3
Input characteristics: 24 V ac. 0.5 A;
10– 11
The external commands do no require
been used.
L - N
Connection of the P1 electric pump to the inverter
Observe the required correspondence closely.
14 – 15
Pass three coils in the supplied ferrite core.
Connect the screen to the ground connection.
L – N Electric pump P2 connections.
Observe the correspondence closely.
16 – 17
L – N Electric pump P3 connections.
Observe the required correspondence closely.
18 – 19
3
ENGLISH
connections because certified optical isolation systems have
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