,
$
YORK, A Johnson Controls Company
5 =
DI
5 – Enables the Interlock function, and assigns a digital input (starting with
DI
5) to the interlock signal for eAYK
PFA relay. These assignments are defined in the following table and depend on:
• The number of PFA relays (number of parameters 1401…1403 and 1410…1412) with value = 31 (
PFA
).
• The Autochange function status (disabled if 8118
AUTOCHNG INTERV
= 0, and otherwise enabled).
6 =
DI
6 – Enables the Interlock function, and assigns digital input
DI
6 to the interlock signal for the speed regulated
motor.
• Requires 8118
AUTOCHNG INTERV
= 0.
8121
!J%##'!"
Selects Regulator by-pass control. When enabled,
Regulator by-pass control provides a simple control
mechanism without a PID regulator.
• Use Regulator by-pass control only in special
applications.
0 =
NO
– Disables Regulator by-pass control. The drive
uses the normal PFA reference: 1106
REF
2
SELECT
.
1 =
YES
– Enables Regulator by-pass control.
• The process PID regulator is bypassed.
Actual value of PID is used as the PFA reference
(input). Normally
EXT REF
2 is used as the PFA
reference.
• The drive uses the feedback signal defined by 4014
FBK SEL
(or 4114) for the PFA frequency reference.
• The figure shows the relation between the control
signal 4014
FBK SEL
(
OR
4114) and the speed
regulated motor’s frequency in a three-motor system.
2c_%\
23 =,2
! 7
!2,2
4,
#
2>%\
!+
,2=9 7;3
%cc
,2=9 7 ;3
%cc
0
DI
1…
DI
4: Free
DI
5: Speed Reg Motor
DI
6: Free
Not allowed
1
DI
1…
DI
4: Free
DI
5: Speed Reg Motor
DI
6: First PFA Relay
DI
1…
DI
4: Free
DI
5: First PFA Relay
DI
6: Free
2
Not allowed
DI
1…
DI
4: Free
DI
5: First PFA Relay
DI
6: Second PFA Relay
3…6
Not allowed
Not allowed
2>%\
!+
,2=9 7;3 ,2=9 7 ;3
0
DI
1…
DI
5: Free
DI
6: Speed Reg Motor
Not allowed
1
Not allowed
DI
1…
DI
5: Free
DI
6: First PFA Relay
2…6
Not allowed
Not allowed
P 4014
f
MAX
P 8110
P 8109
P 8113
P 8112
A = No auxiliary motors running
B = One auxiliary motor running
C = Two auxiliary motors running
A
f
MIN
B
C
(%)
f
OUT
Summary of Contents for York AYK550
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