ELPRO 215U-2, Руководство пользователя

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User Manual MN032EN
Effective October 2017
215U-2 802.11
wireless I/O and gateway
EATON
www.eaton.com
Installation
General
The 215U-2 Series modules are housed in a plastic enclosure with
DIN rail mounting, providing options for up to 14 I/O points, and
separate power and communications connectors. The enclosure
measures 7.2” x 6.0” x 1.3” (183mm x 156mm x 33mm), including
the connectors. The antenna protrudes from the top.
Power supply
ETHERNET
USB RS232 SUPPLY
+
-
GND BAT SUP SUP
+
B A
- +
15-30 Vdc
Supply
3A Fuse
Optional
10.8–15 Vdc
Lead Acid
Battery
–
+
Figure 2. Supply connections
Powering from the SUP+ and SUP– terminals
The 215U-2 will operate from a 15–30 Vdc supply (nominal 24 Vdc)
connected to the SUP+ and SUP– terminals. The power supply must
be able to supply enough current to operate the device, to power all
of the I/O circuits, and to power the device’s radio transmitter when
it is sending data. A 24 Vdc 2.5 A power supply such as ELPRO
PSG60E or PS-DINAC-24DC-OK is suitable for all configurations,
including configurations requiring battery charging and expansion I/O.
If you need to use a supply with a lower power rating; or if you
need to power additional equipment in your installation; use these
guidelines to determine your required power supply current. Add
the relevant elements from
Table 1
to determine your power supply
current requirement. Remember you also need to add current for
any other equipment being powered from the same power supply,
including relays, loop isolators, indicators, etc.
Table 1. Power supply current requirements
Supply voltage
17 Vdc 24 Vdc 30 Vdc
Base operating current 200 mA 150 mA 120 mA
Discrete I/O (per active input or output) 11 mA 7 mA 5 mA
Analog inputs and outputs
(per 20 mA loop)
55 mA 38 mA 30 mA
Connecting a back-up battery to the BAT+ and
GND terminals
The 215U-2 provides an internal battery charger for Sealed Lead
Acid (SLA) batteries. You can connect a 13.8 V SLA battery to the
BAT+ and GND terminals to provide a backup power source if the
main supply fails. While the main supply is present, the battery will
charge at up to 0.5 A rate until the battery voltage reaches 14.3 V.
The battery charger will then maintain a float charge on the battery
at this voltage. To fully charge the SLA battery, the main supply must
be at least 17 Vdc.
When you connect a backup battery, you need to provide sufficient
power to support the additional charge current required when the
battery is discharged (when it is recovering from an extended power
interruption).
Table 2
shows the additional current from your power
supply to support battery charging.
Table 2. Additional current to support battery charging
Supply voltage ( V
sup
) Current required ( I
sup
)
17 Vdc 1000 mA
24 Vdc 700 mA
30 Vdc 550 mA
Formula
Powering expansion I/O modules
The 215U-2 allows connection of 115S Series modules to the RS-485
port to provide expanded I/O capacity. You can use the “+” and
“–“ connections on the 215U-2 to provide up to 500 mA supply for
expansion I/O modules. If you have a back-up SLA battery connected
to the 215U-2, then this connection will also be powered from the
back-up supply, so that the expansion I/O modules receive the
backup power as well as the main module.
ETHERNET
USB RS232 SUPPLY
+
-
GND BAT SUP SUP
+
B A
-
+
115S-xx 115S-xx
RS-485
B A
B A B A
-
+
-
+
Figure 3. Expansion I/O power and RS - 485
When the module is being powered from the main supply (SUP+
and SUP– terminals), you need to provide sufficient power to
support the additional current required by the expansion I/O
modules. Table 3 shows the additional current from your power
supply to support expansion I/O connection.
Table 3. Additional supply current to support expansion I/O
Expansion
I/O
current
( I
exp
)
Current required ( I
sup
)
Supply voltage
17 Vdc 24 Vdc 30 Vdc
Base operating current 115S 120 mA 130 mA 90 mA 75 mA
Discrete inputs
(per active input)
13 mA 14 mA 10 mA 8 mA
Discrete outputs
(per active output)
25 mA 27 mA 20 mA 16 mA
Analog inputs and outputs
(per 20 mA loop)
50 mA 55 mA 38 mA 30 mA
Formula
Powering the module directly from the BAT+ and
GND terminals
In some situations it may be desirable to power the module
directly from a 13.8 Vdc supply. This may be because this voltage
supply is already available at an installation or because the power