P/N: 1176718
REV: 02/17/2021
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15
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Chapter 6: ITR
C
OMBINATION
P
OWER
S
UPPLIES
Class 2 Output Circuit
IntelliROL Combination power supplies include a 24VDC Class 2 output circuit, in addition to the
Class 1 20A circuit(s). For systems with only IntelliROL products, a Standard power supply is
all that is needed. However, if a system has a mixture of IntelliROL and CRUZcontrol (NBC or
XP43), a Combination power supply can be used to power both the IntelliROL and the
CRUZcontrol. A CRUZcontrol tee cable is included with each IntelliROL Combination power
supply.
The Class 2 circuit is created by diverting some of the 24VDC power from the main power
supply unit to a Class 2 protection module. The protection module can provide up to four Class
2 circuits at 3.7A each. Only one of these circuits is wired to the terminal strip. Keep in mind,
each Class 2 circuits can use up to 3.7A from the main power supply unit. This means there is
less current available for the motorized rollers.
Status Indicators
The Class 2 protection module internal to each IntelliROL Combination power supply has status
indicators for the input and outputs. The Input Status indicator will be illuminated solid green
when the input voltage is above 21V. The input protection circuit will be activated if the input
voltage drops to 21V or less. If this occurs, the Input Status indicator will be flashing green.
The indicator will be off if there is no input voltage.
There are four Output Failure indicators, one for each Class 2 output circuit, on the Class 2
protection module. The status of the indicators is as follows:
•
One is flashing red and the others are on solid red – excessive output current was
sensed on the output associated with the flashing indicator.
•
All four are flashing red – the output current sum for all four outputs was excessive.
•
All four are on solid red and the Input Status indication is flashing green – the input
voltage has dropped below 21V and the module is in input protection mode.
•
All four are on solid red and the Input Status indication is on solid green – the outputs
have been turned off via the ON/OFF button or ON/OFF signal input.
•
The indicators associated with outputs 1 and 4, as well as the indicators for outputs 2
and 3 are alternately flashing red – an error internal to the protection module has
occurred.
ON/OFF and Rest Button
The Class 2 protection module has one push button that serves two purposes. If the module is
faulted but the fault condition has been resolved, press and hold the ON/OFF – Reset button for
more than 1 second to reset the module. If this same button is pressed for more than 50
milliseconds, but less than 1 second, the Class 2 output circuit will switch from on to off or off to
on, depending upon their current state.
I/O Connector
An I/O connector is located on the front of the Class 2 protection module in every IntelliROL
Combination power supply. There are three functions controlled via this connector. First, the
ON/OFF – Reset function can be controller through terminals 11 and 12 of the connector. It
functions in the same manner as the push button. Second, the status of the protection module
can be monitored via the Output-OK relay. A set of dry contacts is available through terminals
