Description
SAJ eManager is the energy management system module for SAJ storage systems: a top-hat rail unit that schedules energy between the loads, the battery and the grid, measures at the grid connection with its integrated meter and built-in current transformers up to 63 A, and is used once in every parallel system of SAJ H2, HS2 or HS3 inverters. It is set up and monitored in the elekeeper app or the elekeeper portal.
SAJ eManager (energy management system module)
Energy management: schedules energy to the loads, the battery and the grid, with a self-consumption and a time-of-use working mode.
Integrated meter: built-in current transformers for 63 A per line conductor, measurement accuracy ≤ 1 %; external current transformers above 63 A.
Parallel operation: one eManager per parallel system, with up to six inverters.
Top-hat rail mounting: 108 × 105 × 67 mm on a 35 mm DIN rail, 0.5 kg, IP20, for the switch or meter cabinet.
Working modes for self-consumption and time of use.
In self-consumption mode the PV power supplies the loads first, the surplus charges the battery and the remainder is exported to the grid. In time-of-use mode the battery charges or discharges in set periods, with up to 12 periods in 24 hours; outside them the system works in self-consumption mode. The export limit is set as total power or per phase.
Fits a 35 mm top-hat rail
The module measures 108 × 105 × 67 mm (W × H × D) and weighs 0.5 kg. It is installed inside the AC distribution box, on a rail at least 108 mm long. A 6-pin and a 12-pin connector, the antenna and two RS485 communication cables are in the package.
Works with the elekeeper app and portal
Operation and visualisation run in the elekeeper app or the elekeeper portal. The module reaches the portal over Ethernet or Wi-Fi through the router; commissioning in the app runs over Bluetooth. Firmware of the eManager and of the connected SAJ devices is updated remotely in the portal or over Bluetooth in the app.
Switches one external device by dry contact
The two DO port pairs (NO1/COM1 and NO2/COM2) start and stop a device that has DI ports, for example a heat pump; one device is connected at a time. The DO settings offer dry contact control and SG Ready. Start and stop follow a schedule and thresholds for PV generation power, power sold to the grid and battery state of charge. The DO ports switch at most 4 A at 250 V AC.
Technical data
The energy management system module for SAJ storage systems.
- Nominal current per line conductor
- 63 A
- Measurement accuracy
- ≤ 1 %
- Inverters in parallel
- 6
- DIN rail mounting
- 35 mm
About these specifications
Energy scheduling, metering and data collection in one top-hat rail module.
Connections
- Connection to the portal
- Ethernet or Wi-Fi via the router
- Connection of PCS or inverters
- RS485 via the RJ45 port of the PCS or inverter
- Connection of appliances for energy management
- elekeeper app or elekeeper portal
- Communication
- Bluetooth, Ethernet, Wi-Fi, RS485
Integrated measuring device
- Measurement accuracy
- ≤ 1 %
- Measuring cycle
- 50 ms
Devices in the system
- Inverters in one parallel system
- up to 6RS485: three port pairs, at most two inverters of the same type per pair
- EV chargers
- 1over RS485
Inputs (voltage and current)
- Nominal voltage
- 110 / 120 / 220 / 230 / 240 V
- Frequency
- 50 / 60 Hz
- Nominal current / limiting current per line conductor
- 63 Aabove 63 A with external current transformers
- Connection cross-section
- 10 to 16 mm²for 63 A application
- Torque for screw terminals
- 1.5 Nm
Switching outputs (DO ports)
- Max. switching current
- 4 A
- Max. switching voltage
- 250 V AC
- Max. switching power
- 125 VA / 120 W
Ambient conditions in operation
- Ambient temperature
- -25 to +40 °C
- Storage temperature range
- -25 to +70 °C
- Ambient humidity
- 0 to 95 %, non-condensing
- Protection class (IEC 62103)
- II
- Degree of protection (IEC 60529)
- IP20
- Operating altitude
- 0 to 2000 m
General data
- Dimensions (W × H × D)
- 108 × 105 × 67 mm
- Top-hat rail
- 35 mm DIN rail
- Weight
- 0.5 kg
- Mounting location
- Switch or meter cabinet
- Mounting type
- Top-hat rail mounting
- Status display
- 3 × LED
- Self-consumption
- < 3 W
Features
- Operation and visualisation
- elekeeper app or elekeeper portal
- Update function for the eManager and the connected SAJ devices
- Remote update in the elekeeper portal or Bluetooth update in the elekeeper app
- Warranty (years)
- 3
Documents
Product questions
How many inverters does one eManager manage in a parallel system?
The limit depends on the communication path. With LAN communication in parallel deployment, the eManager can be connected to a maximum of ten inverters. With RS485, a maximum of six inverters can be connected in parallel, and one pair of ports can be connected with two inverters at maximum.
Which inverter firmware does the eManager need?
A firmware update is only applicable when the inverter firmware version is not compatible with the EMS firmware version. The manual lists the minimum DSP and ARM versions per inverter model, for example H2-(3K-6K)-S2: DSP V1.030, ARM V6.040; H2-(5K-10K)-T2: DSP V4.066, ARM V1.070; HS2-(5K-10K)-T2: DSP V4.066, ARM V1.070; HS2-(3K-6K)-S2: DSP V1.030, ARM V6.040; R6-(5K-10K)-(S2, S3): DSP V1.041, ARM V1.069; R6-(5K-15K)-T2: DSP V2.318, ARM V1.069; R6-(15K-50K)-(T2, T3, T4): DSP V2.580, ARM V6.196; R5-(0.7K-3K)-S1: DSP V1.234, ARM V3.100; R5-(3K-8K)-S2: DSP V1.524, ARM V3.100; H2-(10K-30K)-(T2, T3): DSP V3.061, ARM V8.035; HS3-(3K-6K)-S2: DSP V1.135, ARM V1.040; HS3-(5K-12K)-T2: DSP V2.103, ARM V2.030. Check whether your inverter firmware version (DSP version and ARM version) is earlier than the listed ones.
When does the eManager need external current transformers?
When the eManager works as a grid meter, either internal CT or external CT can be applied. The internal CT solution is available for current smaller than 63 A. To use external CTs, select the 50xN A/50 mA CT, wherein N is equal to or greater than 2. When the diameter of the grid AC cable is larger than 48 mm, order an additional DTSU666 (Dual RS485) grid meter from SAJ and prepare external CTs of N A/5 A, wherein the secondary current must be of 5 A.