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MEXM-1

MEXM-1

2 RU height expansion unit with 24 metering inputs, 24 status inputs and 24 relay outputs for use with any DV unit.




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A MEXM-1 adds...
 
24 Metering inputs
24 Status input
24 Relay outputs
 
... to any Davicom unit*
 
Daisy chain MEXM-1 units together and:
Add up to 128 extra Metering inputs to any one of your Davicom units
Add up to 192 extra Status inputs to any one of your Davicom units
Add up to 72 Relay outputs to any one of your Davicom units
 
For example, adding a single MEXM-1 to a DV-Micro yields a total of 32 metering inputs, 32 status inputs and 32 relay outputs for a very low price. These extra I/O's are directly integrated into the DV-Micro's control structure, therefore taking full advantage of the unit's powerful control, monitoring and automation functions.
 
 
 
Maximum total I/O count for different types of Davicom units by daisy-chaining MEXM-1 units together:
 
 
DV-Micro
DV-Mini
DV-208
DV-216
 
Metering
Status
Relay
Metering
Status
Relay
Metering
Status
Relay
Metering
Status
Relay
Maximum
136
200#
80
136
208#
80
136
208#
88
144
224#
104
 
Each MEXM-1 scans all its inputs and outputs at a 10Hz rate for fast detection and control.
 
 
# In Modbus RTU mode, subtract 24 Status inputs.
 
* Requires Davicom firmware version 5.52 or later. Download latest firmware now by registering as a member on davicom.com.

 

MEXM-1 SPECIFICATIONS
Metering inputs Number

24
Voltage ranges

±2.5, ±5, ±10, ±25, ±50 VDC
Impedance

1 MOhms
Protection

Clamping diode
Accuracy

1%
A/D resolution

12 bits
Connector type

Weidmuller pluggable screw terminal
Status Inputs Number

24
Logic levels

High=+2.4 to +12VDC, Low=-12 to +0.8VDC. EIA compatible
Impedance

>22kOhms
Protection

Optoisolated
Ground

Internal or External, individually selectable
Dry/wet contact

Individually selectable with pull-up resistor
Connector type

Weidmuller pluggable screw terminal
Outputs Number

24
Type

Form C Relay or Open collector, individually selectable
Rating
70VAC @ 0.4A, 30VDC @ 2A.
Open collector at 100mA
Connector type

Weidmuller pluggable screw terminal
Interface protocol Modbus

RTU or TCP modes
RTU Mode Connector

USB, RJ-9 for a daisy chain (up to 7 units)
TCP Mode Connector

RJ-45 (up to 8 units)
Power Supply

12 VDC
Typical current requirements at 12VDC Idle

150 mA
Startup

150 mA
Max (all relays energized)

480 mA
Dimensions
48.3 x 8.7 x 3.6 cm, 19" x 3.44" x 1.42"
(including Weidmuller terminals)
Weight (unit only)

1.3 kg
 RoHS / WEEE Compliant