Download R15V0L, Z00IDO Rev C (1)

Designed for use in 14V aircraft electrical systems, the R15V0L Alternator Controller Unit (ACU), consists of these functions:
Voltage Regulation (VR). The VR is a voltage-limiting circuit that prevents the system voltage from exceeding or dropping below a specified
level. The VR has its field current controlling device between the bus and the alternator’s field. The ACU keeps the bus voltage at its specified
level by comparing it to an internal (precise) reference voltage. It supplies current to the field when the bus voltage drops below the reference
point and removes the field current when the voltage exceeds this level.
OV Protection (OVP) & OV (Warning) Indicator (OVI). If the OVP circuit senses that the bus voltage exceeds the OV level, it will open
the current path to the alternator’s field to remove current from the field. The OVP protects the system against excessive voltage produced by an
over-excited alternator. OVI comes on when the alternator drops off-line due to OV trip or Field-to-Ground Short Fault Protection, the OV light
will stay on and remain on until the power to the ACU is reset.
Field Ground Fault Protection (GFP). The GFP circuit monitors the field current for indication of a ground short. If it senses a field- toground short, the GFP circuit will turn off the Voltage Regulator, thus removing excitation from the field circuit. When the GFP activates, the
output will remain off, the OV and LV lights come on until the Master or Alt switch is reset.
Trouble-Shooting Light (TSL). The TSL Light Emitting Diode (LED) on the ACU indicates the condition of the alternator (Alt) or ACU field
circuit. The TSL has three-color states: Red, Green or Off.
A Red TSL with the Bat and Alt switches on indicates an internal or external ground short in the Alt field circuit.
A Green TSL with means there is power coming out of the ACU. With the engine on, a Green TSL and a bus voltage of 13.8V to 14.4V means the system
is operating correctly. A sustained bus voltage of 11V to 13V means an open alternator field or field wire. Unless the ACU is damaged, the TSL should be
Green when the master switch is on. Very slow flickering Green TSL with engine on indicates high resistance between the red wire and bus. With the
engine off, the voltage on pin 1 is usually 0.2 to 2V less than what is on the red wire or bus. With the engine and master switch on, the voltage on the blue
wire will vary between 0.1 to 13V depending on the system electrical load.
A TSL that is off with the Master switch on and no power to the ACU (red wire), indicates a defective power input device (like switch, circuit breaker, or
wiring). If there is voltage on the red wire then the ACU is damaged.
SPECIFICATIONS
Voltage
Regulation
14.2 ±
0.4V
Field
Current
6±
1A
16.0 ±
0.4V
OV Protection
(OV trip)
OV Indication 10-16V, Field-to-Ground
Yes Weight
Current Source ≤ 0.1A Short Protection
0.3
LB.
Electrodelta VR371. Lamar: B00371-1, B00371-8, B00371-14, B00371-25. Piper: 557-337.
Replacement for P/Ns:
Replacement for combined Voltage Regulator and Over Voltage Relay
Voltage Regulator by Beech: 169-380063. Commander: 1816110. Delco-Remy: 9000590. Electrodelta VR200, VR200A. Lamar: B-00331, B-00267.
Piper: 484-121, 68804-03, 68804-04, 450-393, 756-055. Prestolite: FVR4004, FVR4224. RBM: 87-87102-21, and
OV Relay Electrodelta or Prestolite (P/N OS75-14, FOC4002B), Lycoming (P/N 74661), Wico (P/N X17621, X16799), Piper (P/N 450393, 450397,
484183, 550-380), Beech (P/N 138-1), Lamar (P/N B00289, B00339), Delco-Remy (P/N 115831), PFT/Lamar (P/N DG04)
WIRING DIAGRAM
MOUNTING DIAGRAM
3.31”
0.28”, 0.22”,
6 PL
4 PL
1.20”
1.50”
Power In
Height
= 1.10”
Field
RED
ALT
5A
BLUE
BAT
Relay
OVI WHITE
BAT
R15V0L
L
Ground BLACK
2.36”
Longview, Texas. USA
Title
Drawing No
Rev
Rev
Rev
C
B
A
B
F2
ALT
Out
A
INSTRUCTION FOR CONTINUED AIRWORTHINESS (ICA)
For Continuing Airworthiness Maintenance, use page 1-11-2 or return this unit to ZEFTRONICS or its
Repair Station: HAZOTRONICS.
While most OEMs do not require it, it is good practice to check the complete electrical charging system
(ECS) during annual inspections. This includes visual inspection, resistance, and voltage drop
checks/tests of all ECS connections and junctions.
This drawing is proprietary and confidential with all rights reserved by this company. Permission to use,
duplicate or distribute it requires written approval from ZEFTRONICS Div., TOVYA GROUP INC.
Product Installation
R15V0L
Model No
F
G
3.14”
Trouble
Shooting
Light, TSL
ZEFTRONICS
L – OV or Field-to-Gnd
short light is optional.
B
u
s
35A 100A
ALT
3.63”
Fld
Z00IDO
Rev
Rev
C
Drawn By
Approved By
Femi G. Ibitayo
FPGIbitayo
Date 11-15-07
Redrawn to make mounting & wiring diagrams clearer. Added ICA statement
Redrawn to add dimensions to mounting diagram.
Redrawn to clarify. Added post-installation instruction.
Date
© 1990-2007
Zeftronics
Released to
11-15-07 Page 1 - 11 - 1
Classification
Classification
Classification
Minor
Minor
Minor
Old System with separate Voltage Regulator & OV Relay
ALT
Power In RED
R1510L
FLD
5A
BAT
Relay
Out Input Gnd
OV RELAY
Ground BLACK
F1
B
F2
G
Fig 1
35A 100A
BAT
Output YELLOW
ALT
A
B
U
S
ALT
OUT
F2 may be grounded
inside alternator
System with the ACU (Combined V.Reg & OV Relay)
WIRING DIAGRAM
Power In
Field
RED
ALT
5A
BLUE
BAT
Relay
OVI WHITE
R15V0L
L
Ground BLACK
BAT
Fig 2
F
B
F2
G
B
u
s
Pre-Installation Checks
Record the required resistances on the table below.
1.
If the system has a separate Voltage Regulator (V.Reg) and OV Relay, Fig 1,
disconnect them. Mark the identity/placement of the removed wires.
2.
If the system has an ACU as in Fig 2, disconnect the red, blue and black
wire, and if connected, the white OVI wire. Mark the identity or placement
of the removed wires.
3.
Turn off the alternator field switch. Measure the resistance from the field
wire removed from the V.Reg. It should measure 3 to 7Ω*. Measure the field
resistance of the alternator at directly at the two field posts or from the field
to ground. It should be the same as measured at the field wire. If you
measure ∞Ω or open, there is an open field or broken field wire. If you read
0Ω, it means a short to ground. If the alternator's field resistance is outside
the specified range, remove, and have the alternator tested or repaired.
4.
With the Alt switch closed, check the resistance between the red wire and the
bus. Make sure it measures 0.1Ω or less. A higher resistance can cause
flickering meter and lights. A fluctuating charge meter is indicative of a voltage
drop (caused by excessive resistance) in the Alt field circuit breaker, alternator’s field
switch, or any of the connections and wires between the bus bar and the red wire of the
ACU. Excessive voltage spikes or high current reading on the ammeter may also come
from poor connection between the Alternator Bat terminal and the bus.
35A 100A
ALT
L – OV or Field-to-Gnd
short light is optional.
Fld
Use the same procedures for annual inspection or continued airworthiness checks,
except do not replace a good/working ACU. See the table below for the expected
or required measurements listed in this section.
A
F2 may be grounded
inside alternator
ALT
Out
5.
6.
Check for loose or broken wires or connections in the electrical charging
system circuit. Check for and fix any poor grounding.
Optional: check the resistances of the Alt field, Alt out, and Alt Bat to bus.
Fig 3
Installation Instruction & Checks
What to measure
Field resistance at V.Reg
Field resistance at ALT
ALT Field circuit breaker
ALT output circuit breaker
ALT Bat to Bus resistance
ACU red wire to Bus resistance
ACU red wire voltage (Engine off)
ACU blue wire voltage (Engine off)
Alternator field voltage (Engine off)
Bus Voltage (Engine off)
Voltage on Bus @ 1600-2000RPM
Reading
Expect
3 – 7Ω
3 – 7Ω
0 – 0.1Ω
0 – 0.1Ω
0 – 0.1Ω
0 – 0.1Ω
10 – 13V
10 – 13V
10 – 13V
10 – 13V
13.8–14.4V
1.
2.
3.
4.
5.
Connect the wire from the Alt switch to the Red of ACU.
Connect one wire from the alternator field (F1 or F2) to the ACU blue wire.
Connect the other alternator field wire or terminal to ground.
If desired, connect a warning light between the White wire and ground.
Securely mount the ACU to the airframe and ground.
Ensure that all connections are secure. Cap off unused wires. Ensure that all
wires are clear from moving parts and controls.
Post-Installation Instruction & Checks
1.
2.
3.
4.
Notes
5.
With the engine off: Turn on the Bat and the Alt switches.
If connected, the OVI light should be off.
Verify that the voltage on the ACU red is battery or bus voltage.
Verify that the voltage on the ACU blue is 10 to 13V or 0.5-2V below the
battery or bus voltage. The TSL light on the ACU should be Green. If the
light is Red, it means that there is a ground short on the field wire or in the
alternator field. Repair or remove the short to ground on the field. If the TSL
is off, verify that there is bus voltage on the red wire. If there is voltage on
the red wire and the TSL is off, verify that there is voltage on the blue wire.
If there is voltage on the blue and the TSL is off, the ACU is damaged.
Start the engine and verify that the OVI light is off and the Bus voltage reads
13.8 to 14.4V at 1600 - 2000 RPM with about 5 – 30A load. If the bus voltage
remains at battery voltage and the ACU TSL is Green, turn off the engine and
find the open circuit between the alternator field and the ACU.
*Manufacturer dependent value
ZEFTRONICS
Longview, Texas. USA
Title
Product Installation
R15V0L
Model No
Drawing No
Rev
Rev
Rev
C
B
A
This drawing is proprietary and confidential with all rights reserved by this company. Permission to use,
duplicate or distribute it requires written approval from ZEFTRONICS Div., TOVYA GROUP INC.
Z00IDO
Rev
Rev
C
Drawn By
Approved By
Femi G. Ibitayo
FPGIbitayo
Date 11-15-07
Redrawn to make mounting & wiring diagrams clearer. Added ICA statement
Redrawn to add dimensions to mounting diagram.
Redrawn to clarify. Added post-installation instruction.
Date
© 1990-2007
Zeftronics
Released to
11-15-07 Page 1 - 11 - 2
Classification
Classification
Classification
Minor
Minor
Minor