ProMinent DULCOMETER diaLog DACb Assembly And Operating Instructions Manual page 36

Assembly and installation
36
Galvanic isolation with the 24 V DC version.
Terminals XC1 and XA3 to the mains terminal XP1 are not gal‐
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vanically isolated with the 24 V DC version.
If there is a potential difference between the supply terminal
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XP1 and XA3 or XC1 via an external earth loop, then this can
lead to a fault in the controller
24 VDC version, supply line
Ensure that the device is fed with protective low voltage.
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Provide appropriate protection to prevent voltage surges
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between the plus and minus line and the earth (PE) with supply
lines longer than 30 metres or which exit the building.
Live parts!
Measure: Ensure that the unit is disconnected from the power
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supply before undertaking installation work.
Regularly monitor the equipment and de-energise damaged or
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faulty equipment, or equipment that has been tampered with.
It is the duty of the operator to install a suitable isolating device
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(e.g. IEC 60947-2 or IEC 60947-3) for this.
When switching off the device, it is the responsibility of the
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operator to ensure that the entire process remains safe.
It is the responsibility of the operator to fit a residual current
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device (RCD) or another suitable device to ensure the safety of
personnel and equipment.
Degree of pollution 3
Opening the housing (e.g. for installation or repair) is only per‐
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mitted under the following conditions when using the device in
pollution degree level 3 areas
Ambient temperature from 5 °C to 40 °C.
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Maximum relative air humidity 80% at temperatures up to 31
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°C, dropping linear to 50% relative air humidity at 40 °C.
Residual current device (RCD)
It is the duty of the operator to provide and set up an electrical
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isolating device and residual current devices (RCD), which
need to be easily accessible.
Electrical isolating device
The device does not include a switch. There needs to be a
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switch or circuit breaker fitted in the building installation. This
needs to be positioned appropriately, easily accessible by the
user, and be labelled as an isolating device for the devices.
Output relay (XR1 ... XR3)
The output relays (XR1 ... XR3) must be fitted on site with a
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max. 5 A fuse.
The entire device needs to be fitted on site with a max. 5 A
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fuse with devices with an internal protective RC circuit (module
D, identity code characteristic value "1" for hardware exten‐
sion).
Notes: This fuse can be provided with an appropriate isolating
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device, among other things. This fuse means that both output
relays (XR1/XR2) can each only be loaded with approx. 2 A.
The alarm relay (XR3) must be fitted separately with a
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max. 5 A fuse.
Signal and control lines
Signal and control lines need to be routed separately from
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power cables, as otherwise they could malfunction.