Interconnections
34
close proximity to other conductors which carry
current to heavy loads such as motors, motor
starters, contactors, or solenoids. Doing so
could result in electrical transients in the
encoder cable, which can cause undesired
signal pulses. Power leads are defined as the
transformer primary and secondary leads, motor
leads and any 120 VAC or above control wiring
for relays, fans, thermal protectors, etc.
Continuity of wires and shields should be
maintained from the encoder through to the
controller avoiding the use of terminals in a
junction box. The shield and shield drain wires
must be insulated from other objects. This helps
to minimize radiated & induced noise problems
and magnetically induced ground loops.
Always use an encoder with complementary
output signals. Connect with twisted-pair
shielded wire so that wire-induced currents will
self-cancel.
NOTE: DO NOT ground the encoder through
both the machine and the cable wiring. Connect
the shield at the receiver device only. If the
shield is connected at both ends, noise currents
will flow through the shield and degraded
performance will result.
HPV 600 Encoder Specifications
The HPV 600 requires the use of an encoder
coupled to the motor shaft. The encoder power
can be either a 5VDC or 12VDC supply. The
capacity of each 12VDC or 5VDC power supply
is 150mA .
The HPV 600 can accept encoder pulses of:
600 to 10,000 pulses per revolution (ppr)
a maximum frequency of 300kHz
IMPORTANT
Motor phasing should match the encoder
feedback phasing. If the phasing is not correct,
the motor will not accelerate up to speed. It will
typically oscillate back and forth at zero speed,
and the current will be at the torque limit.
Swapping A and /A or switching two motor
phases should correct this situation.
The encoder pulses per revolution must by
entered in the ENCODER PULSES parameter.
The encoder connection terminals are shown
below.
Encoder Option Card Connections
Below shows the connection for the encoder
option card, if they are configured to be single
ended. This configuration is not recommended,
since, the HPV 600 encoder noise immunity
circuitry is not in effect.
Single-ended Encoder Option Card Connections
(pn46S03710-0010)
61
62
63
64
65
66
67
68
encoder common
/A
A
/B
B
e12VDC power
e5VDC power
shield
61
62
63
64
65
66
67
68
encoder common
/A
A
/B
B
e12VDC power
e5VDC power
shield
Содержание HPV 600
Страница 1: ...HPV 600 AC Elevator Drive Technical Manual...
Страница 162: ......
Страница 163: ......