Multi Cluster Current Limitations - Weco HeSU 4K4-R19/4 Product Manual

WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL
13.

MULTI CLUSTER CURRENT LIMITATIONS

The inverter, if has the functions, must be set with the below restrictions in addition to the BMS control logic settings.
Clusters
Batteries
1
2
3
4
5
INVERTER LIMITS
CURRENT: as per this chart
1. The charge current will be limited to 0A when the single module voltage has reached 56.8V.
2. The discharge current will be limited to 0A when the single module voltage has been discharged to 46.7V.
3. The battery system will communicate with the inverter to limit the current (If Inverter is Compatible).
4. Each battery will be protected by the same logic separately as per single module protection concept.
5. If some batteries individually will reach any fault status the single battery will protect and disconnect from the
system in less than 3 seconds.
6. The current limit of the system must be adjusted according to the active batteries in system in order to restore
normal function.
7. If the cluster is not balanced, the current limitation set from the HUB to the inverter will be sent in order to
manage the rest of active modules and clusters, in the same time the imbalanced modules or cluster will
equalize in standby mode and will reconnect once in the normal range.
8. If more than 2 batteries in one cluster are in protection mode the entire cluster will protect by shutting down.
9. If there is more than 2 cluster in protection mode, the full system will protect by shutting down.
10. The batteries will send information to the inverter to limit the charge/discharge current to zero Amps if the
battery is detecting an over current. (If Inverter is Compatible)
11. Current limit protection cycle allows an automatic reconnection for three times. If the issue is not resolved
within three reconnection attempts, it is necessary to perform a full manual restart. Precautionary checks in
accordance with this manual must be carried out.
12. If the current of one cluster is larger than the current limit, the battery system send a warning according with
the single module BMS logic
13. If the warning state does not clear within 5 minutes, the cluster will shut down and a manual reconnection is
required. Precautionary checks in accordance with this manual must be carried out.
HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT
CONTROL LOGIC AND PROTECTION LIMIT
CURRENT SETTING / BMS CURRENT LIMIT
1 2
- 155
155 279
206 372
241 433
301 488
3
206 275
372 495
446 528
462 616
578 700
HIGH VOLTAGE 56,7 Vdc
LOW VOLTAGE 48,5 Vdc
V_1.07.1_2019 P
age-45
4 5
344
557
660
700
700