SPC, control panel, and HMI
The single point connection (SPC) and control panel are contained in an IP 54 cabinet with a
hinged, latched, and gasket sealed outer door. Each module contains a control panel, and each unit
contains a human-machine interface (HMI), the Optiview
TM
LT HMI, contained in the IP54 cabinet.
SPC:
• The SPC box with circuit breaker is used to provide a single point connection for each modular
array and isolate the power for servicing.
• The SPC terminal box is an optional offering to support multi-module arrays.
Control panel:
• A factory-mounted circuit breaker with external, red lockable handle to enable connection of the
unit power supply. The circuit breaker can be used to isolate the power for servicing, and also
be used as an emergency stop device.
• Factory-mounted filter board with fuses to provide protection for each inverter compressor
driver. It converts alternating current into DC to drive the variable-speed compressor.
• Factory-mounted fuses to provide protection for each fan.
• The unit microprocessor control board (IPU3).
• A relay board connected to the control board to extend digital output.
• A factory-mounted fuse to provide protection for the hydro kit of a single module.
• A factory-mounted control transformer must be wired to the power panel, with input/output
fuse protection and emergency stop isolation to supply the 115-1-60 from the unit power
supply.
HMI:
• Password protected.
• Access level restrictions for operation and servicing.
• Multi-language LCD controls and keypad display, with English as the default language.
SC-equip (SC-EQ)
A factory-mounted SC-EQ communication card provides BAS network connectivity and
communication capability for BACnet (MS/TP), Modbus, and N2 as standard.
The SC-EQ communication card is designed with three active serial ports: The J3 BAS (RS-485) port,
the J5 equipment (RS-485) port, and the J1 CS port or remote unit monitoring and diagnostics.
CAUTION
Locate the chiller control panel in a physically secured area with access only to authorized personnel. To
further tighten security, ensure that the control panel is mechanically locked. Remove the keys to the control
panel and store them in a secure location.
Canadian registration number (CRN) application
YMAE BPHE are categorized as pressure H fittings per CSA-B51. According to the Canadian
Standards Association’s Boiler, Pressure Vessel, and Pressure Piping Code B-51 (2009 version), a
product registered as a category H fitting does not require a label or marking displaying the CRN.
YMAE refrigeration systems' individual circuir power rated less than 125kW are exempted from
CRN registration. These systems are covered by CSA C22.2 and must be tested and certified by an
approved testing laboratory, equivalent of UL 60335-2-40/1995 in the US.
19YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump
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