W
ATLOW
®
EZ-ZONE
®
RMZ4
-
11
-
E
THER
CAT
®
A
DAPTER
5.6
RM
S
YSTEM
C
ONNECTIONS
The RM system controlled by an RMZ4 module can be installed as stand-alone modules or can be
interconnected on the DIN rail as shown below. When modules are connected together as shown, power and
communications are shared between modules over the modular backplane interconnection. Therefore,
bringing the necessary power and communications wiring to any one connector in slot C is sufficient. The
modular backplane interconnect comes standard with every module ordered and is generic in nature, meaning
any of the RM modules can use it.
The modules can also be mounted in different locations and the backplane connected via wires in a
Split Rail
configuration as shown in the figure. Notice in the split rail system diagram that a single power supply is used
across both DIN rails. One notable consideration when designing the hardware layout would be the available
power supplied and the loading effect of all of the modules used.
Watlow provides three options for power supplies listed below:
1. 90-264VAC to 24VDC @ 31 watts (Part #: 0847- 0299-0000)
2. 90-264VAC to 24VDC @ 60 watts (Part #: 0847- 0300-0000)
3. 90-264VAC to 24VDC @ 91 watts (Part #: 0847- 0301-0000)
With regards to the modular loading affect, maximum power for each is listed below:
1. RMCxxxxxxxxxxxx @ 7 watts / 14VA
2. RMEx-xxxx-xxxx @ 7 watts / 14VA
3. RMAx-xxxx-xxxx @ 4 watts / 9VA
4. RMLx-xxxx-xxxx @ 7 watts / 14VA
5. RMHx-xxxx-xxxx @ 7 watts / 14VA
6. RMSx-xxxx-xxxx @ 7 watts / 14VA
So in the worst case EtherCAT® integrated system, 48 loops, the maximum current draw on the supply would
be 39 watts.
- 1 RMZ4 consumes 4 watts
- 3 RMS modules consumes 21 watts
- 2 RME modules consumes 14 watts