iSMA-B-MAC36NL User Manual
Version 1.4
www.gc5.pl
Page 6 / 51
1.5
Technical Specification
Power Supply
Voltage
24 V AC/DC ± 20% isolated
Power consumption
14 W @ 24 V DC; 24 VA @ 24 V AC
Universal Inputs
Temperature input
•
Measurement with attached RTDs
•
Accuracy ±0,1˚C
•
For sensor Pt1000 and Ni1000 use 16-bit
resolution
Voltage input
•
Voltage measurement from 0 - 10 V
•
Input impedance 100 kΩ
•
Measurement accuracy ±0,1%
•
Measurement resolution 3 mV@12-bit and
1 mV@ 16-bit
Current input
•
Current measurement 0 - 20 mA
•
Required external resistor 200 Ω
•
Measurement accuracy ±1,1%
•
Measurement resolution 15 µA @ 12-bit and 5 µA
@ 16-bit
Resistive input
•
Measurement of resistance from 0 to 1000 kΩ
•
Measurement resolution for 20 kΩ load 20 Ω@12-
bit and 1 Ω@16-bit
•
Measurement resolution for PT1000 and NI1000
0,1Ω@16bit
Resistance measurement method
The voltage divider
Dry contact input
Output current ~1 mA
Switching threshold: ON <5kΩ, OFF >8kΩ
Measurement resolution
12-bits (default) or 16-bits
Processing time
•
10 ms/channel @ 12-bits
•
140 ms/channel @ 16-bits
Digital Inputs
Type
Dry contact
Switching threshold
ON <5kΩ, OFF >8kΩ
Max input frequency
100 Hz
Analog Outputs
Voltage range
0 to 10 V DC
Max. load current
20 mA
Resolution
12-bits
Accuracy
±0.5%
Digital Outputs
(relays)
Contact material
AgSnO2
Resistive load
3 A @ 230 V AC/30 V DC
RS485 Interface
(base and optional)
RS485
Up to 128 devices
Half-duplex, Opto-isolated
Communication protocols
Modbus RTU/ ASCII, BACnet MS/TP