Solid State Cooling Systems Switchback 6600 CE, Product Manual

Page: 12 / 26

S
WITCHBACK
6600 CE B
IPOLAR
DC P
OWER
S
UPPLY
M
ANUAL
P
ART
N
UMBER
: 52-11147-X
S
OLID
S
TATE
C
OOLING
S
YSTEMS
, 167 M
YERS
C
ORNERS
R
OAD
, W
APPINGERS
F
ALLS
, NY 12590
T
ELEPHONE
: (845) 296-1300 FAX: (845) 296-1303
E
-
MAIL
:
WWW
.
SSCOOLING
.
COM
V
ERSION
: M6
3.2
M
INIMUM SIGNAL
H
OOKUP
R
EQUIRED
(See figures 5A & 5B)
In addition to the power connections, operation of the Switchback 6600
CE from one source of control signals requires three signals: Local
On/Off (pin 19), Local Set point (pin 23) and Local Polarity Control
(pin 22); or if using one of the 4-20 mA versions, Local On/Off (pin 19)
normal (Cool) Set point (pins 1 & 2) and reverse (Heat) Set point (pins
16 &17).
3.3 H
OOKUP FOR
T
WO
S
OURCES OF
C
ONTROL
S
IGNALS
(Not available on 4-20 mA versions)
The Switchback 6600 CE is designed to operate from two sources of
input, for example, the equipment front user interface or rear
maintenance panel. Local operation overrides remote operation. Local
operation may occur with remote operation off, but remote operation
may not occur unless local operation is on also. See Table 4 (Section
5.0) for details. Minimum hookup for two sources of input requires four
signals in addition to the three signal described in Section 3.2:
Remote/Local (pin 20), Remote On/Off (pin 18), Remote Set point (pin
16) and Remote Polarity (pin 17).
WARNING!
If the power supply is turned on as per Table 4 (Section 5), but the set
point signal being used (pin 23 or 16) is disconnected, the set point
signal can float up to 5 V on its own, causing maximum DC output.
To avoid this:
1) Never disconnect the local or remote set point signal being used.
2) If using only remote set point, tie the local set point to signal
ground.
3.4 I
NPUT
P
ROTECTION
A suitable 3-phase, 250 V, 30 amp, AC protector, such as circuit UL
489 rated circuit breaker,
SHOULD
be provided by the user to protect
against failures in the regulator.
Notice to Users Required to Meet CE Emissions:
Two clamp-on ferrite beads are included with your Switchback 6600 Bipolar DC Power Supply. To
meet CE conducted emissions, you must thread your two DC output wires through the cylindrical
ferrite bead and clamp the square ferrite bead around your 3-phase AC input wires. The ferrite beads
should be placed within one foot of the power supply case.
Radiated emissions from an installed Switchback 6600 Bipolar DC Power Supply are affected by the
length of the DC output wires. To ensure the installed unit meets CE radiated emissions specifications,
the DC output wires should be placed inside a flexible metallic sheath, such as BX cable.
WARNING
WARNING