S+S Regeltechnik RHEASGARD KLGF Serie Notice D'instruction page 15

G
Installation and Commissioning
Notes for mounting
Mounting shall take place while observing all relevant regulations and standards applicable for the place of measurement (e.g. such as welding
instructions, etc.). It is particularly important to comply with the following:
– VDE ⁄ VDI directive technical temperature measurements,
measurement set-up for temperature measurements
– The EMC directives must be adhered to
– It is imperative to avoid parallel laying of current-carrying lines
– We recommend using shielded cables with
the shielding being attached at one side to the DDC ⁄ PLC
– the cable length between sensor and GLT should not exceed 100 m
- reversing the polarity of the connections can cause damage to the unit and/or other units on the wiring harness
Before mounting, make sure that the existing technical parameters of the measuring instrument comply with the actual conditions at the place of
utilisation, particularly with regard to:
– Measuring range
– Permissible maximum pressure, flow velocity
– Protection type and protection class
– Mounting length, tube dimensions
– Oscillations, vibrations, shocks are to be avoided (< 0.5 g)
– Only suitable for non-precipitating, pollutant-free air without positive or negative pressure!
– Contamination must be removed with air only!
– Observe a minimum inlet distance of 5x d in upstream and an outlet distance of 3x d!
– Mounting length depends on direction, Observe marking!
Attention!
In all cases, please observe the mechanical and thermal load limits of protective tubes according to DIN 43763
respectively according to specific S+S standards!
SUPPLY VOLTAGE :
For operating voltage reverse polarity protection, a one-way rectifier or
reverse polarity protection diode is integrated in this device variant.
This internal one-way rectifier on AC supply voltage.
The output signal is to be tapped by a measuring instrument. The output
signal is measured her against zero potential (O V) of the input voltage!
When this device is operated on DC supply voltage , the operating voltage
input UB+ is to be used for 15...36 V DC supply and UB – or GND for
ground wire!
When several devices are supplied by one 24 V AC voltage supply, it is to
be ensured that all "positive" operating voltage input terminals (+) of the
field devices are connected with each other and all "negative" operating
voltage input terminals (–) (= reference potential) are connected together
(in-phase connection of field devices). All outputs of field devices must be
referenced to the same potential!
In case of reversed polarity at one field device, a supply voltage short-
circuit would be caused by that device. The consequential short-circuit
current flowing through this field device may cause damage to it.
Therefore, pay attention to correct wiring!
Connecting scheme
Power supply
AC 24V~ 0V
DC 15-36V = GND
Connecting scheme
Power supply
AC 24V~ 0V
DC 15-36V = GND
15
Individual operation
Circuitry
V
Parallel operation
Circuitry Circuitry