Input-Output Modules
BMS INPUT/OUTPUT MODULES
2 STAGE RELAY, RAISE-LOWER, HIGH-LOW 0-10VDC
E2RMD
Liquid crystal display for set up and relay status
Digital set up of relay energisation voltages
Volt free relay contacts
Ambient -10 to +50 deg C
Din rail mounting.
This product accepts a 0-10VDC input and
produces a 2 stage relay output which can
be used for external plant switching.
The default voltage values for relay
energisation are fixed but if required these
values can be modified.
Type
E2RMD
24VAC/DC
0-10VDC
DIMENSIONS/TERMINATIONS:
54mm
Input
Resolution
Power
Consumption
Switch Rating
230VAC SPDT
Enclosure
0.1VDC
1.0W max
2 x 10(3)A
IP00
67mm
126mm
Supply
Input Range
+-15%
TIMING DIAGRAM:
INPUT
BINARY
RELAY1 RELAY2
0V
0
OFF
OFF
4V
1
ON
OFF
7V
2
OFF
ON
10V
3
ON
ON
INPUT
RAISE/LOWER
LOWER
RAISE
0V
0
OFF
OFF
4V
1
ON
OFF
7V
2
OFF
OFF
10V
3
OFF
ON
INPUT
HIGH
HIGH/LOW
LOW
0V
0
OFF
OFF
5V
1
ON
OFF
10V
2
ON
ON
BINARY MODE:
OFF
RELAY2
ON
OFF
RELAY1
ON
OFF
OFF
RELAY2RAISE
OFF
RELAY1LOWER
OFF
ON
OFF
ON
ON
OFF
ON
ON
OFF
RELAY1LOW
OFF
OFF
OFF
RELAY2HIGH
ON
This diagram shows how the states of the
relays change with input 0-10VDC voltage
for the default voltage settings case. This
diagram also identifies the step numbers
for each mode for use if the default
energisation voltages are to be changed.
OFF
ON
OFF
INPUT(VDC)
0
1
2
3
4
5
6
7
8
9
10
9
8
7
6
5
4
3
2
1
0
SET UP:
Wire the E2RMD to the wiring diagram noting that the correct polarity of the 0-10VDC is important. Set both the AUTO-OFF-HAND links to AUTO.
Setting the control mode
pushbuttons step through
Whilst holding down the pushbutton turn on the power. The display will show MODE and SET. Using the
the modes of BINARY, HIGH/LOW and RAISE/ LOWER. Confirm the required mode using the SET button.
Setting the required relay energisation voltages
The Timing diagram shows the default relay state at various DC input voltages. If these values are satisfactory there is no need to make
any changes.
If changes are required to the energisation voltages proceed as follows:
Press the SET pushbutton. The display will show MODE and the selected control mode eg BINARY or RAISE/LOWER or HIGH/LOW, the
step number 0 and a flashing SET indication and voltage value. Use the
pushbuttons to set the required voltage value. Press the SET
button to confirm.
The display will now show the step number 1 and a flashing SET indication and voltage value. Use the
pushbuttons to set the required
value. Press the SET button to confirm.
Continue this process for the step number 3 (if appropriate for the selected mode) until the display shows TIME DELAY with SET flashing.
Use the
pushbuttons to set the required time delay and press SET button again to confirm.
The display will now show MODE and selected control mode and the input DC voltage being received.
In use, when either relay is energised the adjacent red led will be lit.
INSTALLATION:
Observe the local regulations regarding electrical installations.
Size the power cables according to the load.
Telephone: +44 (0)1480 407074
Fax: +44 (0)1480 407076
Email: sales@electrocontrols.co.uk
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