Monitoring functions, protective functions and extent of delivery

The SE-i1 monitors the signals of several sensors positioned on the compressor and compares the measured values with the permissible, pre-programmed data.

In any case, it has the following special product features:

Data log
Real-time clock
Communication via Modbus RTU
Configurable and compatible with BEST software

The following table gives an overview of all monitoring functions, the extent of delivery and further options of SE-i1.

SE-i1: Monitoring functions, extent of delivery and options
	*CS.65 .. CS.95, CSHP, HS.53 .. HS.85** basic sensor kit	CS.65 .. CS.95, HS.64 .. HS.85 with full sensor kit	SE-i1 as SE-C1 replacement part number: 347 050 02	SE-i1 as SE-C2 replacement part number: 347 050 04
Protective and monitoring functions
Motor protection functions: Motor temperature (PTC) Rotation direction Phase failure	● ● ●	● ● ●	● ● ●	● ● ●
Oil monitoring: CS.: oil level HS.53 .. HS.74: oil flow HS.85: oil flow/oil stop valve	● ● ●	● ● ●	● ●	●
Warning if the recommended shut-off periods are not complied with	●	●	●	●
Discharge gas or oil temperature monitoring (PTC, in series with motor PTC)	●	--	●	●
Discharge gas or oil temperature monitoring with measured temperature (NTC)	➀	●	➀	➀
Monitoring of maximum and minimum motor frequency	●	●	●	●
Monitoring of application limits (via low pressure and high pressure transmitters)	➀	●	➀	➀
Low and high pressure switches	➀	●	➀	➀
Settings in the BEST SOFTWARE
Preset parameters	Compressor type: "SE-C1 Replacement" or "SE-C2 Replacement" Serial number of the compressor	Compressor type, serial number of the compressor	Compressor type: "SE-C1 Replacement"	Compressor type: "SE-C2 Replacement"
Required minimum settings	--	Refrigerant, ECO operation	--	--
Further recommended settings	Date and time, system information	Date and time, system information, pressure switch	Serial number of the compressor, date, time, system information	Serial number of the compressor, date, time, system information
Other
Wired and tested when leaving the factory	●	●	--	--
Wire bridge required for unused oil monitoring inputs ③	Yes	No	Yes	Yes
Optional temperature sensor	②	②	②	②

* For the HS.53 compressors, the SE-i1 is exclusively delivered as a separate basic sensor kit (part number 347 050 02). It must be installed, wired and connected in the system's switch cabinet!

Use of the compressor protection device in combination with refrigerants classified as A3 (e.g. propane) and A2:

DANGER

Risk of explosion!

The supplied compressor protection device can ignite the refrigerant.

Mount the compressor protection device outside the hazardous zone, for example in a gas-tight switch cabinet.

➀ Completion sensor kit

HS.64 .. HS.85, CS.65 .. CS.95, CSHP:

If the SE-i1 was ordered ex factory with a basic sensor kit, it can be retrofitted with the completion sensor kit. Afterwards, all protective and monitoring functions of the device can be activated and fully used. For this, all components of the completion sensor kit must be mounted on the compressor, wired and configured using the BEST SOFTWARE . When ordering the full sensor kit for the compressors HS.64 .. HS.85 And CS.65 .. CS.95, all components of the completion sensor kit are already installed and electrically connected to the compressor.

Due to the risk analysis for operation with flammable refrigerants of safety class A3, the compressor protection unit for the CSHP compressors is supplied as an accessory pack and must be installed on site in the switch cabinet of the system. The sensors are factory mounted and must be wired and connected to the SE-i1 on site. (see also Video Mounting Instructions CW-110).

The completion sensor kit (HS.64 .. HS.85 And CS.65 .. CS.95, part number 347 050 03) consists of the following components:

Low pressure and high pressure transmitters with connecting cables.
T-pieces for connecting the pressure transmitters to the high pressure and low pressure connection of the compressor.
Discharge gas temperature and oil temperature sensor (NTC) incl. connecting cable: T_dis: 0°C .. + 120°C.
All cable bushings M25x1.5, M20x1.5, M16x1.5 with hexagon nuts for the terminal box of the compressor.

② Optional temperature sensor

For example, for measurements of the suction gas, liquid or ambient temperature. Is considered during the data log.

Measuring input T_aux (NTC):

Maximum measuring range: -40°C .. +100°C

Temperature sensor with screw-in thread (part number 347 041 01) + cable with plug (part number 344 900 02).

1/8-27 NPTF thread
Measuring range: -40°C .. +125°C

Temperature sensor to be placed on the pipe surface (part number 347 033 01).

for measurements of the suction gas temperature on the pipe surface or measurements of the ambient temperature.
Measuring range: -30°C .. +105°C
Enclosure class: IP65
Cable length: 5 m

③ Unused oil monitoring inputs

With the setting "SE-C1 Replacement" or "SE-C2 Replacement", unused oil monitoring inputs must be deactivated by means of bridges. They must be set between the following terminals.

Bridge to deactivate the oil monitoring inputs