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5.2.3 X1 terminal block - Gen Set Signaling (GEN ON)
If an emergency generator set supplies the UPS in case of Mains Failure and the generator is considerably
unstable in frequency, it should be suitable to install the signal "GENERATOR ON" on X1 / 11, 22. See Fig. 5.2-1 /
X1.
Since the Parameter for of the reading of the Generator function is password protected, call your GE Service
Center for it's activation.
When this contact closes, it changes certain (programmable) functions such as:
• Enabling or disabling of synchronization and consequently the Load transfer to generator.
• Reduction or elimination or delay of Battery recharging during the generator operation.
Additionally, when the "GENERATOR ON" input contact is closed, the UPS will inhibit SEM Operation Mode and
revert to double-conversion operation.
It is advised to contact your ABB Service Center for further details.
In an RPA Parallel System, a separate NO (Normally Open) contact must be connected to each
individual unit.
5.2.4 X1 terminal block - AUX External Maintenance Bypass
If the UPS system is equipped with an external Maintenance Bypass Switch, it is possible to connect a NO
(Normally Open) voltage-free aux. contact from the External Bypass Switch to the programmable input X1 / 10,
21, making the UPS operate as if the internal switch "Q2 – Bypass Manual" has closed.
This function can be activated by changing a dedicated parameter (password required).
When this NO (Normally Open) contact closes, the output Inverter Contactor K7 it is automatically opened and the
Load transfer back to Inverter will be inhibited.
In an RPA Parallel System, the input on the Customer Interface of each unit must be connected
to a separate AUX contact of the External Maintenance Bypass Switch.
5.2.5 X1 terminal block - SEM/IEMi control signal
The UPS operation in either SEM (Super Eco Mode) or IEMi (Intelligent Energy Management integrated) operating
modes can be controlled via a NO (Normally Open) contact by installing the "SEM/IEMi CONTROL" signal, routed
to the programmable function contacts (see Section 5.2.3).
When this contact closes, SEM or IEMi operation mode is inhibited.
The Parameter for the activation of such function is "Service Code" protected.
Contact your ABB Service Centre for its activation.
This function is particularly useful for controlling SEM or IEMi operation following critical conditions on either the
load side or the input Utility, including generator operation when the "GENERATOR ON" signal has not been
installed.
When using the "SEM/IEMi control" function on the programmable user relays of the Customer
Interface X1 terminals in an RPA Parallel System, a separate NO (Normally Open) contact must
be connected to each individual unit.
TLE Scalable Series 40 to 150 UL S1
UPS Installation Guide / REV-B
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