YOKOGAWA RAMC - Page 21

<3. INSTALLATION>
3-5
IM 01R01B02-00E-E 12th edition October 01, 2014 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
F
G
RAMC
230 / 115 V AC
4
Power supply
Output 0/4-20mA
R < 500 Ω
L
Rotameter
PE--
5
7
6
Pulse output
Umax = 30V ; Imax = 100mA
-
+
-
+
+
-
F3.EPS
Fig. 3-5 RAMC 4-wire unit with pulse output
15
4
6
3
1
14
12
10
11
8
7
9
12
11
10
9
I -
I +
L/+N/-
O -
O+
Output 4-20mA
O+H
Output HART
U
F
G
RAMC
A
Supply 230V AC
KFA6-SR2-Ex2.W
Option: /W2B two channels: KFA6-SR2-Ex2.W
Transmitter relay
Limit MIN
Limit MAX
Option / Kn
Rotameter
4-20mA
Max
Min
Limit switch
EN 60947-5-6 (Namur)
One channel connection like limit MAX
I = 101mA
P = 1.4W
C = 4.16nF
U = 30V
L = 0.15mH
Transmitter WT-MAG
Ex ia IIC T6
Gb
PTB 12 ATEX 2003
Tamax = 70°C
Tamax = Temperature in indicator
C = 150nF
Ex ia IIC T6
L
= 0.15uH
SC 3.5-NO
P = 64mW
I = 25mA
U = 16V
Temperature
T4 Tamax = 89°C
T3 Tamax = 89°C
T2 Tamax = 89°C
T1 Tamax = 89°C
Class
T5 Tamax = 61°C
T6 Tamax = 49°C
PTB 99 ATEX 2219 X
PTB 00 ATEX 2018
Transmitter power supply
Option: /UT
Option: /W2A one channel: KF A6-SR2-Ex1.W
C = 2320nF
I = 19.1mA
P = 51mW
U = 10.6V
L = 97mH
PTB 00ATEX 2081
[Ex ia]) IIC
KFA6-SR2-Ex2.W
RN221N-B1
RN221N-B1
Tamax = 50°C
C = 86nF
L = 5.2mH
U = 27.3V
P = 0.597W
[Ex ia] IIC
I = 87.6mA
o
o
o
o
o
e.g. Standard Type 2
-
+
-
+
-
+
~ ~
+
-
+
-
i
i
i
i
i
i
i
i
i
o
o
o
o
o
F5.EPS
i
Hazardous area
Safe area
Fig. 3-6 Ex-version acc. to ATEX (Option /KS1 and /KS2) : RAMC 2-wire unit with power supply,
limit switches and transmitter relay