Yokogawa 415 Steam and Gas - Manual (Page 75)

7.2 WIRING DESIGNATIONS FOR THE MODEL 415
Terminal Model 415R Model 415A
1 Calibration Link Calibration Link
2 Signal Ground Signal Ground
3 Flow 1 (4-20mA) Flow 1 (4-20mA)
4 PT100 I (+) Temperature (4-20mA)
5 PT100 Signal (+) Reset Switch
6 PT100 Signal (-) Display Switch
7 Pressure (4-20mA) Pressure (4-20mA)
8 Flow Common (-) Flow Common (-)
9 Flow Pulse Input (+) Flow Pulse Input (+)
10 Pulse Out Pulse Out
11 DC Power Out (8-24V) DC Power Out (8-24V)
12 DC Ground DC Ground
13 DC Power Input DC Power Input
14 PT100 I (-) Flow 2 (4-20mA)
Note: When using a single 4-20mA flowmeter, it is connected to
terminal 3. The second 4-20mA flow input on terminal 14 is only
used when there are dual 4-20mA inputs. In this case, terminal 3
becomes the High Flow input and terminal 14 is used for the low
flow.
Terminal Analog Flow Output (4-20mA) RS232/422/485
20 Not To Be Used RS232 Signal Ground
21 0 Volts RS232 Data In
22 0-10 Volts RS232 Data Out
23 -12 Volts RS422/485 (-) Data Out
24 I(-) RS422/485 (+) Data Out
25 I(+) RS422/485 (-) Data In
26 +15 Volts RS422/485 (+) Data In
27 Not To Be Used RS232 CTS
Installation 73