Carrier AQUASNAP 30RB060-390 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 26

Air-cooled liquid chillers
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L3
L3
L2
N
L2
L1
L
L1
TO CONDENSER
Fig. 13 — Low Ambient Temperature Control
Power Wiring
Table 20 — Siemens VFD Head Pressure Control
Parameters
PARAMETER*
VALUE
P0010
1
P0311
1140
P3900
1
P0003
3
P0757
0.50
P0761
0.50
P1210
6
P1310
10
*Remove jumper from terminals 5 and 8 (or terminals 5 and 9 for
575-v units) before configuring parameter. Reinstall jumper after
configuration is complete.
DIP switch settings:
DIP switch 1 is not used.
DIP switch 2 is the motor frequency. (OFF = 50 Hz,
ON = 60 Hz)
Siemens VFD Programming — Parameter values can be al-
tered via the operator panel. The operator panel features a five-
digit, seven-segment display for displaying parameter numbers
and values, alarm and fault messages, set points, and actual val-
ues. See Fig. 15. See Table 21 for additional information on the
operator panel.
NOTE: The operator panel motor control functions are dis-
abled by default. To control the motor via the operator panel,
parameter P0700 should be set to 1 and P1000 set to 1. The
operator panel can be fitted to and removed from the drive
while power is applied. If the operator panel has been set as the
I/O control (P0700 = 1), the drive will stop if the operator
panel is removed.
D
D
+
-
C
C
U
V
W
T1
T2
T3
FAN MOTOR
DESCRIPTION
Enter Quick Commissioning
Rated Motor Speed
End of Quick Commissioning
User Access Level
Control Signal Scaling Offset
Control Signal Scaling Offset
Automatic Restart Setting
Continuous Boost Parameter
AOUT+ AOUT- P+ N-
12 13 14 15
DIN1 DIN2 DIN3 24V+ 0V
ENABLE
JUMPER
5
6
7
10V+ 0V AIN+ AIN-
1
0-10 VDC FROM FAN BOARD
NOTE: For 575-v units, jumper terminals are 5 and 9.
Fig. 14 — Low Ambient Temperature Control
Fig. 15 — Siemens VFD Low Ambient
Temperature Controller
Changing Single Digits in Parameter Values with the Sie-
mens VFD Operator Panel — For changing the parameters
value rapidly, the single digits of the display can be changed by
performing the following actions:
Ensure the operator panel is in the parameter value chang-
ing level as described in the Changing Parameters with the
Operator Panel section.
1. Press
(function button), which causes the farthest
Fn
right digit to blink.
2. Change the value of this digit by pressing
3. Pressing
(function button) again to cause the next
Fn
digit to blink.
4. Perform steps 2 to 4 until the required value is displayed.
5. Press
(parameter button) to exit the parameter value
P
changing level.
NOTE: The function button may also be used to acknowledge
a fault condition.
26
ON
DIP SWITCH 2
RLB RLC
8
9
10
11
2
3
4
+
Signal Wiring
or
.

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