Despatch P1400+ Temperature Controller - Manual (Page 29)

23
4.18 Option Slot B
Option Slot B Connections – Heater Current Input Module
If the heater current measurement feature is available, connections from the secondary winding of
the current transformer are as illustrated below.
Figure 30. Option Slot B – Heater Current Input Connections
Option Slot B Connections – Digital Input 2 (Full Auxiliary Module)
If option slot B is fitted with the Full Auxiliary input module (see below), a secondary digital input is
also provided. This may be connected to either the voltage free contacts of a switch or relay, or a
TTL compatible voltage.
Figure 31. Option Slot B – Digital Input 2 Connections
Option Slot B Connections –
1
/
4
DIN Full Auxiliary Input Module
If option slot B is fitted with full auxiliary input feature, input connections are as shown.
Figure 32. Option Slot B – Full Auxiliary Input Connections
WARNING:
IF THE FULL AUXILIARY MODULE HAS BEEN FITTED, THE BASIC AUXILIARY INPUT MUST
NOT BE FITTED INTO OPTION SLOT A.
9
8 _
+
7
6
5
(or Pot Low)
_
+
(or Pot Wiper)
(or Pot High)
6
7
CT Secondary
∼