Yokogawa RotaMASS 3-Series - Manual (Page 215)

9. EXplOSION prOTECTEd TYpE INSTrUMENTS
9-23 All Rights Reserved. Copyright © 2003, Rota Yokogawa IM 01R04B04-00E-E 8th edition March 01, 2011 -00
remote rack-mount type rCCr31 with rCCS3
WARNING
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 the potential equalisation facility.
3. Please confirm that the ground terminal on terminal board is firmly connected.
4. Ex-e terminals for power supply and I/O-lines are designed for cables with cross section of 0.08 mm²
(AWG 28) to 2.5 mm² (AWG 22). The strip length must be 5 to 6 mm (0.2 to 0.24 in).
5. 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
L/+
N/-
G
Power supply
I/O control
Hazardous area Safe area
I/O
RCCF31 RCCS3
D+
D-
S1+
S1-
S2+
S2-
TP1
TP2
TP3
D+
D-
S1+
S1-
S2+
S2-
TP1
TP2
TP3
COM
Exclusive remote cable RCCY03
F92.EPS
Terminal Box
The inner shields (shields of the cable pairs) are connected together to COM –terminal on converter side.
The outer shield of the cable is connected on both sides to the cases by cable gland.
Detailed information for connection intrinsic safe outputs (option /EF2) see chapter 4.8.8.
Installation diagram (option /EF1) :