RLC-SVX14H-GB
63
Relay Assignments Using TechView
CH530 Service Tool (TechView) is used to install the
Alarm and Status Relay Option package and assign
any of the above list of events or status to each of the
four relays provided with the option. The relays to be
programmed are referred to by the relay’s terminal
numbers on the LLID board 1A13.
The default assignments for the four available relays of
the RTWD Alarm and Status Package Option are:
Table 22 - Default assignments
Relay
Relay 1 Terminals J2 -12,11,10: Alarm
Relay 2 Terminals J2 - 9,8,7:
Chiller Running
Relay 3 Terminals J2-6,5,4:
Maximum Capacity
(software 18.0 or later)
Relay 4 Terminals J2-3,2,1:
Chiller Limit
If any of the Alarm/Status relays are used, provide
electrical power, 110 VAC with fused disconnect to the
panel and wire through the appropriate relays (terminals
on 1A13. Provide wiring (switched hot, neutral, and
ground connections) to the remote annunciation
devices. Do not use power from the chiller’s control
panel transformer to power these remote devices. Refer
to the fi eld diagrams which are shipped with the unit.
Low Voltage Wiring
WARNING Ground Wire!
All
fi
eld-installed wiring must be completed by quali
fi
ed
personnel. All
fi
eld-installed wiring must comply with
local codes and regulations. Failure to follow this
instruction could result in death or serious injuries.
The remote devices described below require low
voltage wiring. All wiring to and from these remote
input devices to the control panel must be made with
shielded, twisted pair conductors. Be sure to ground the
shielding only at the panel.
Note: To prevent control malfunctions, do not run
low voltage wiring (<30 V) in conduit with conductors
carrying more than 30 volts.
Emergency Stop
CH530 provides auxiliary control for a customer
specifi ed/installed latching trip out.
When this customer-furnished remote contact 5K24 is
provided, the chiller will run normally when the contact
is closed. When the contact opens, the unit will trip on a
manually resettable diagnostic. This condition requires
manual reset at the chiller switch on the front of the
control panel.
Connect low voltage leads to terminal strip locations
on 1A5, J2-3 and 4. Refer to the fi eld diagrams that are
shipped with the unit. Silver or gold-plated contacts are
recommended. These customer-furnished contacts must
be compatible with 24 VDC, 12 mA resistive load.
External Auto/Stop
If the unit requires the external Auto/Stop function, the
installer must provide leads from the remote contacts
5K23 to the proper terminals on 1A5 J2-1 and 2. The
chiller will run normally when the contacts are closed.
When either contact opens, the compressor(s), if
operating, will go to the RUN:UNLOAD operating mode
and cycle off. Unit operation will be inhibited. Closure
of the contacts will permit the unit to return to normal
operation. Field-supplied contacts for all low voltage
connections must be compatible with dry circuit 24 VDC
for a 12 mA resistive load. Refer to the fi eld diagrams
that are shipped with the unit.
External Circuit Lockout – Circuit #1 and Circuit #2
CH530 provides auxiliary control of a customer specifi ed
or installed contact closure, for individual operation
of either Circuit #1 or #2. If the contact is closed, the
refrigerant circuit will not operate 5K21 and 5K22. Upon
contact opening, the refrigerant circuit will run normally.
This feature is used to restrict total chiller operation, e.g.
during emergency generator operations. Connections to
1A10 are shown in the fi eld diagrams that are shipped
with the unit. These customer-supplied contact closures
must be compatible with 24 VDC, 12 mA resistive load.
Silver or gold plated contacts are recommended.
Installation – Electrical
