en:sim:manual:popis:parametry_zakladniho_modulu []

Basic module parameters

Max. number of devices¹
SM2-MU Basic and SM2-MU Start	1 device¹
SM2-MU 60	6 devices¹
SM2-MU 300	30 devices¹
SM2-MU 1000	100 devices¹


Supported devices¹	Ethernet or serial bus connected
Communication	Ethernet (TCP), up to 3 serial ports
Inverter protocols	AEG, Carlo Gavazzi, Danfoss, Delta, Diehl, Fronius, IBC Solar, Kaco, Kostal, Mastervolt, Morningstar, Omron, Pairan, Power‑One, Refusol, Riello UPS, Santerno, Satcon, Schneider‑Electric, Siemens, Siliken, SMA, Solarmax, Solutronic, Studer, Sungrow, Sunville, Sunways, Vacon, Xantrex
Meter protocols	ABB (REX521), Carlo Gavazzi (VMU-E/X), Fronius (Smart Meter), KMB (SMC-144, PA-144), Phoenix Contact (MA200/250), Schneider‑Electric (SEPAM, PM9), Yorix (GreenBonO), ZPA (IEC 62056-21)


Sensors	Dallas 1-wire bus
Interface	Screw terminals for 05 mm² - 15 mm² cores
Max. count	10 sensors
Max. distance	100 m, recommended max. cable length for daisy‑chained sensors with minimal trunk segments


Ethernet interface (LAN)
Interface	RJ45 (100BASE-T) -100Mbit/s, compatible with networks 10/100/1000 Mbit/s, auto MDIX
Protocols	HTTP, SOAP, DNS, UDP Setup, Telnet, ARP, ICMP, SMTP, SNMP, Modbus


RS485 / RS422 / RS232
Interfaces	2x RS485 or 1x RS422²

	piggy-back hardware options ³
	2x RS485 or 1x RS422 opto-isolated²
	1x RS485 + 1x RS232
	1x RS485 + 1x RS232 opto-isolated

	SM2-BE extension module
	1x RS232 + 1x RS485 surge protected⁴

Speed	300 .. 115.200 bps (software configurable)^{2, 5}
Termination	Yes, both for half and full duplex, configurable with jumpers


Inputs	opto-electronically isolated
3x digital inputs (DI)	software configurable between dry contact or S0 pulse meter inputs (e.g. from electrometer)
Max. distance	30 m (depends on cable)


Outputs
1x relay	32 V, 3 A, protected with power fuse


Electrical parameters
Power supply	9-35 V DC, typ. 1.2 W @ 12V
DI1, DI2, DI3	8-80 V
1 Wire	Interface provides 5 V power supply, max. 350 mA, protected with 500 mA power fuse.
RS485	Protected against transient voltages above 6.8V and against high currents with 10Ω resistors. Additional surge protection can be achieved with SM2-BE (bus extension) module with gas discharge tubes:
	Minimum DC Sparkover (100 V/s) 185 V
	Service life:
	150 operations 8/20 μs 250 A, 1.2/50, 500 V (IEC61643-21)
	20 operations 2/10 μs, 5 kV, 500 A
	2 operations 8/20 μs, 1 kA


Mechanical parameters
Dimensions	71.6 x 89.7 x 62.2 mm
Mounting	DIN rail
Screw terminals	05 mm² - 15 mm² cable cores
Degree of protection	IP20
Operating temperature	0 .. +70 °C
LED diodes	Status, RS485, Sensors


Extension options
Interface	HBUS (DIN rail, bottom pluggable, no external wires needed)
Extension modules	SM2-PC, SM2-AD, SM2-DI, SM2-GSM, SM2-BE

^{1 … A device represents an inverter, stringbox, MPP tracker, battery monitor, meter or any other device which can be detected on any serial bus or via ethernet communication.}

^{2 … Can be configured by software (web UI, XML).}

^{3 … Piggy-back functionality replaces the “2x RS485 or 1x RS422” interface.}

^{4 … SM2-BE is mutually exclusive to the SM2-GSM usage. 2x SM2-BE modules can be also used to extend the HBUS connection between SM2 modules.}

^{5 … Communication speeds are available according to selected device communication protocols.}