Yokogawa RotaMASS 3-Series - Manual (Page 204)

9. EXplOSION prOTECTEd TYpE INSTrUMENTS
9-12 All Rights Reserved. Copyright © 2003, Rota Yokogawa IM 01R04B04-00E-E 8th edition March 01, 2011 -00
9.2.3 general warnings
- Substitution of components may impair intrinsic safety !
- Only trained persons may use the instrument in industrial location.
- The instrument modification of parts replacement by other than authorized representatives of YOKOGAWA
is prohibited and will void the certification.
- If the cover of the converter case has to be opened, following instructions must be followed:
- Confirm that the power cables to the instrument are disconnected.
- Wait 15 minutes after power is turned off before opening the covers.
- The covers of display side and terminal box are fixed with special screws,
please use Hexagonal Wrench to open the covers.
- Be sure to lock the cover with special screw using the Hexagonal Wrench after
tightening the cover (see drawing chapter 4.3).
- Prohibition of specification changes and modifications. Users are prohibited from
making any modifications of specifications or physical configuration, such as adding or changing the
configuration of external wiring ports.
WARNING
remote rack-mount type rCCr31 with rCCS3
1. Remote rack-mount converter RCCR31 must only be installed in safe area !
2. Ex-type RCCR31 and RCCS3 must be connected to the suitable IS earthing system
(see installation diagram). Converter and detector case must have connection to he potential
equalisation facility.
3. Please confirm that the ground terminal on terminal board is firmly connected.
4. For EMC technical reasons the case of the detector is connected to the case of the
converter via the shielding of the interconnecting cable.
Installation diagram :
L/+
N/-
G
Power supply
I/O control
Hazardous area Safe area
I/O
RCCR31 RCCS3
D+
D-
S1+
S1-
S2+
S2-
TP1
TP2
TP3
D+
D-
S1+
S1-
S2+
S2-
TP1
TP2
TP3
COM
Exclusive remote cable RCCY03
F93.EPS
Terminal Board
WARNING