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Document #10-32813 Rev A; June 07, 2019
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14
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System Wiring
The RMA PLUS module can be interconnected with other RM modules on the DIN rail via the standard EZ-ZONE mod-
ular interconnection point on the backplane, which is a standard feature on every device in the EZ-ZONE RM family.
You may run power and communications for the entire system of connected RM devices through the RMA PLUS.
Figure 7: Interconnection Point
Ground Wire Connection Point
Split Rail Power Needs
You may have a single power supply designated for two separate DIN rails with interconnected RM modules. When
designing your hardware layout for a split rail system, consider the available power supply and the loading effect of all
modules used.
Watlow provides three options for power supplies:
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90-264VAC to 24VDC @ 31 watts (Part #: 0847- 0299-0000)
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90-264VAC to 24VDC @ 60 watts (Part #: 0847- 0300-0000)
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90-264VAC to 24VDC @ 91 watts (Part #: 0847- 0301-0000)
Note the maximum power for each individual module of 7 watts/14VA, and consider the total of all combined units when
planning power to your split rail system:
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RMCxxxxxxxxxxxx @ 7 watts / 14VA
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RMEx-xxxx-xxxx @ 7 watts / 14VA
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RMHx-xxxx-xxxx @ 7 watts / 14VA
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RMLx-xxxx-xxxx @ 7 watts / 14VA
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RMSx-xxxx-xxxx @ 7 watts / 14VA