Eurotherm 7000 Series, User Manual

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7300A user Manual 2-9
Installation
Table 2-3 Description of control terminal blocks
Version Terminal Terminal description Terminal Torque
block name No. Name Purpose capacity
mm
2
AWG Nm
Basic ANA 31 0VA 0 V for analogue signals
or 32 RI ‘+’ for analogue signals 1.5 16 0.5
Options 33 5VA 5 V user output
A/F 16 230 230 V aux. supply
(except 17 115 115 V aux. supply 2.5 14 0.7
SELF) 18 0V Neutral or second phase
Option DIG 61 0VD 0 V logic signal
ICO 62 ACK Alarm acknowledgement 1.5 16 0.5
63 5VD 5 V user output
Options ALR 71 1a Alarm relay 2.5 14 0.7
Alarms 72 1b contact (code NC)
73 1a Alarm relay
74 1b contact (code NO)
Option: EXT 21 N Supply Neutral for 4S
DLF, 22 Not connected
VICL
Option ADJ.CAL 66 0VC 0 V calibration 1.5 16 0.5
VICL 67 HRC Calibration control
Digital
Comms AUX2 19 24V
Auxiliary power supply
2,5 14 0,7
Option 20 0VS
29 GND
COM 91 B
Comme connector
2,5 14 0,5
92 A
2.5. CONTROL CONNECTIONS
Terminal blocks on the underside of the 7300A power thyristor unit are used to connect:
• the control signals (analogue and logic)
• the auxiliary or electronics supply and the neutral
• alarm relay and acknowledgement contacts
The wires used should be stripped for a length of 6 to 7 mm.
2.5.1. Control terminal blocks
The control terminal blocks are plug-in screw connectors.
The terminal blocks available depend on the power thyristor unit version and the selected
options in the product code.
The terminal names and numbers are marked on the front panel for available terminal
blocks. The table below gives details of all terminals and terminal blocks.