CU-EMA+
CAUTION
Supply cable
The power adapter must be suitable for the maximum power used by the device.
It must be heat-resistant and must not come into contact with hot surfaces. The power
supply must meet IEC 60227 or IEC 60245. Or be approved by another recognised testing
body.
NOTICE
Please note:
The structure and quality of the electrical installation can have a considerable impact on
the reliability and performance of the devices. We therefore strongly recommend the
personnel responsible for the electrical installation familiarise themselves with the in-
cluded circuit diagrams and instructions before planning the installation. Please observe
the local laws. The device must be connected by a trained professional. Please also note
the operation instructions for the individual devices.
4.3.1 Connection
Type
Voltage
Terminals
Function
Power supply
115VAC/230VAC, 50 Hz/60Hz
X0: 1 + 2 + PE
Input for entire device
Power supply
115VAC/230VAC, 50Hz/60Hz
max. 800 VA
X1: 3+ 8 + PE
Output for external consumers
Input contact
max. 115VAC/230VAC, 24 VDC
2 A, 50 VA (or less depending on consumer)
X3: 1 + 3 + PE
Input external consumers
(looped through to X4: 2)
Output contacts
max. 115VAC/230VAC, 24 VDC
2 A, 50 VA
X4: 1 + 2
External consumer
X4: 1 + 3
Sample gas cooler status, moisture and
operational regulated heated line
Options
Type
Voltage
Terminals
Function
Power supply
115VAC/230VAC, 50Hz/60Hz
max. 1600 VA
X2: 1 + 2 + PE
Output regulated heated line
Power supply
115VAC/230VAC, 50Hz/60Hz
max. 1600 VA
X2.1 1 + 2 + PE
Output self-regulating heated line
Inputs
(customer mains)
24 VDC/18 mA
X4: 4 + 5
Control for optional test gas solenoid valve
115VAC/230VAC/6 mA
X4: 6 + 7
Input PT100
---
X5: 1 + 2
Input regulated heated line
4.4 Gas Connections
Please refer to the assembly plan in chapter
[> page 32] for the number and positions of gas connections
The heated sample gas line must have a downward slant toward the gas inlet.
After connecting the sample gas line it must be braced and secured with the clamp. Longer sample gas lines may require addi-
tional clamps along the device path.
DANGER
Toxic, corrosive gases, sample gas can be harmful.
Sample gas/condensate may be hazardous to health.
a) Purge the device with inert gas or air (only when non-flammable gases inside the gas
path) for some time before connecting the lines or performing maintenance.
b) If necessary, ensure safe gas discharge.
c) Switch off the gas supply before performing maintenance and protect from opening
inadvertently.
d) Wear suitable protective equipment when performing maintenance to protect your-
self from toxic/corrosive gases/mediums.
e) Also protect yourself with a suitable gas sensor when asphyxiant gases such as N2 oc-
cur in the gas path.
9
Bühler Technologies GmbH
BE440029 ◦ 10/2020
