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RLC-PRC016-EN
Controls
PC Workstation
System Level
Controller
MP581 Programmable
Controller
Air-cooled Series R
™
Chiller
MP581 Programmable
Controller
Ice Tanks
Boiler
Pumps
Simple Interface With Other Control
Systems
Microcomputer controls afford simple
interface with other control systems,
such as time clocks, building automation
systems and ice storage systems. This
means you have the flexibility to meet
job requirements while not having to
learn a complicated control system. This
setup has the same standard features as
a stand-alone water chiller, with the
possibility of having the following
optional features.
Alarm Indication Contacts
The unit provides three single-pole/
double-throw contact closures to
indicate that a failure has occurred,
compressor on/off status, or if the
compressors are running at maximum
capacity. These contact closures may be
used to trigger jobsite supplied alarm
lights or alarm bells.
Other Control Systems
Interface With Other Control Systems
Stand-alone Unit
Interface to stand-alone units is very
simple; only a remote auto/stop for
scheduling is required for unit operation.
Signals from the chilled water pump
contactor auxiliary or a flow switch are
wired to the chilled waterflow interlock.
Signals from a timeclock or some other
remote device are wired to the external
auto/stop input.
Note: Do not use the chilled water pump
to stop the chiller.
Required Features
1. External Auto/Stop (Standard)
2. Chilled Waterflow Interlock (Standard)
Additional Features That May Be Used
1. Remote Running and Alarm Indication
Contacts
2. External Interlock (Standard)
3. Chilled Water Temperature Reset
External Trane Devices Required —
None
External Chilled Water Setpoint
Allows the external setting independent
of the front panel setpoint by one of two
means:
a) 2-10 VDC input, or
b) 4-20 mA input.
External Current Limit Setpoint
Allows the external setting independent
of the front panel setpoint by one of two
means:
a) 2-10 VDC input, or
b) 4-20 mA input.
Ice Making Control
Provides interface with ice making
control systems.
Chilled Water Temperature Reset
Reset can be based on return water
temperature or outdoor air temperature.