Filter
Top Products
48
Fig 19-4 shows typical output voltage trimming connection for FPS1000 unit ‘A’ inside the rack
Units ‘B’ and ‘C’ connections - Refer to 17.7.5
Signals are accessible at the J1(A), J2(B), J3(C) connectors on the rear panel of the rack
Fig 19-5 shows typical connection for FPS1000 unit ‘A’. inside the rack
Units ‘B’ and ‘C’. connections - Refer to 17.7.5
Note: AC_FAIL, DC_OK and TEMP.ALARM are open collector signals
Application
Monitoring
and Control
circuits
FPS-1000 Module B
FPS-1000 Module C
FPS-T1U
FPS1000
Module A
12V AUX
AC_FAIL_A
DC_OK_A
TEMP.ALARM_A
SIGNAL RET
10K 10K
10K
3
14
5
11
9
J1(A)
J2(B)
J3(C)
19.3 Output Voltag Trimming
FPS-1000 Module B
FPS-1000 Module C
FPS-T1U
FPS1000
Module A
J1(A)-8
J1(A)
J2(B)
J3(C)
J1(A)-6
J1(A)-7
R1
R2
R1&R2:0.5W
+S
-S
V_TRIM
FPS1000-24:
R2=0.0785*V
2
out -5.819*Vout+105.132
R1(K
Ω)=20(KΩ)-R2(KΩ)
FPS1000-48:
R2=0.0497*V
2
out-7.2795*Vout+259.04
R1(K
Ω)=50(KΩ)-R2(KΩ)
FPS1000-32:
R2=0.0463*V
2
out -4.5805*Vout+109.49
R1(K
Ω)=20(KΩ)-R2(KΩΩ)
FPS1000-12:
R2=0.0324*V
2
out -1.1298*Vout+9.9342
R1(K
Ω)=5(KΩ)-R2(KΩ)
19.4 Supervisory Signals
19.5 Grounding outputs
Either the positive or negative output terminals can be grounded. To avoid noise problems caused by
common-mode current flowing from the load to ground, it is recommended to ground the output terminal
as close as possible to the power supply's output. Always use two wires to connect the load to the power
supply regardless of how the system is grounded.
Fig 19-5 Supervisory Signals
Fig 19-4 Output Voltag Trimming