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© Multilink Inc. 2020
•
All Rights Reserved
Multilink Inc.
580 Ternes Ln. | Elyria,OH 44035 | 440.366.6966 | www.gomultilink.com
Front Panel Control and Connections
Section 3: Front Panel Control and Connections
The front panel of each Safety Automatic Transfer Switch contains various connections. These items are
described as follows. See figure 3-1, 4-1, and 4-2 for connector locations. Further details regarding use of
control and operation may be found in the
Startup and Operation
section of this manual.
Control
AUTO/BYPASS SWITCH:
This switch allows the SATS to either automatically select the AC power source
when necessary or to Bypass the UPS and generator power sources and utilizes the AC utility voltage to
power the traffic equipment during UPS and generator maintenance. LED indicator illuminates in “Bypass”
mode.
UPS INPUT CIRCUIT BREAKER:
20A magnetic circuit breaker for UPS input voltage. This circuit breaker is
used to open or close input power to the UPS and allow for UPS maintenance and removal without discon-
necting power to the load.
Connections
POWER HARNESS:
The SATS contains a UPS power harness to connect either the EDP double conversion
UPS or a Line Interactive UPS to the SATS. This harness is model dependent, with the EDP series containing
four, labeled wires, and the Line Interactive model containing six, labeled wires.
MAINS/LOAD/GEN:
3, WECO 324-HDS screw type terminals provide the attachments of “MAINS” AC utility
line voltage, the “LOAD” of the cabinet traffic equipment, and the “GEN” generator attachment to the out-
side cabinet generator connector. Max torque of 7.0 lbs-in.
RELAY CONNECTOR:
OnShore Tech OSTTJ® 7 pin terminal blocks allow for external alarm reporting to a
conflict monitor for both the MAINS and GEN AC power through dedicated dry contacts relays. Each re-
lay has a set of 2 pins.
NOTE:
The first set of pins is marked “AUX” and are place holders for UPS’ utilizing a
48VDC control wires. Max torque of 5.0 lbs-in.
DUPLEX OUTLET:
Provides 120VAC/60Hz power up to
6.0 Amps
for additional equipment to be attached.
Fig. 3-1 SATS Front Panel Detail
MAINS/LOAD/GEN
CONNECTORS
DEDICATED DRY
CONTACT RELAYS
6.0A DUPLEX
OUTLET
UPS POWER
HARNESS
BYPASS SWITCH
AND UPS INPUT CIRCUIT
BREAKER
