DiPro 1500 Installation
DiPro 1500 User Manual
39
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1092000
N/O C N/C N/O C N/C N/O C N/C N/O C N/C
CHAN 1
CHAN 2
CHAN 3
CHAN 4
Figure 2-12B. Connector TB302 for wiring from relays to equipment
How you make connections depends on the type relay used. For 120 Vac relays
you can connect wires from your equipment to "C" and either the N/O or N/C side
of the relay. If you connect to N/O, the equipment will be on for the degrees set
on DiPro. If you connect to N/C, the equipment will be on except for the degrees
set. Generally, you use the N/O terminal so equipment is off except when set on
using the DiPro keyboard. Use the N/C terminal only if it is more practical to do
the reverse. All solid state relays and logic level relays work only when the C and
the N/O side is connected. Polarity must be right for some relays—see Table 2-
4B.
Table 2-4B. Making connections to relay relays
Module
Relay
DC Solid
State
AC Solid
State
How to
connect
Type
– to C
+ to N/O
SPDT
SPST
SPST
one wire to C
one wire to N/O or N/C
(polarity does not matter)
one wire to C
one wire to N/O
(polarity does not matter)
10. You must install arc suppressors across each inductive load (motors, relays, coils,
etc) that is connected to an output relay. Suppressors are supplied with each relay.
The suppressors reduce electrical noise and will extend the life of the relays. Find
the suppressors supplied with the relays. They are cylindrical in shape with leads
at each end (they look like a big capacitor).
DO NOT INSTALL SUPPRESSORS ACROSS RELAYS
Suppressors must not be installed across the relay contacts inside
the relay enclosure. If a suppressor is installed across the relay
contacts and it fails shorted, the equipment controlled by that
relay will remain energized all the time.
11.
Install the suppressors across the load and as close to the load as possible. Attach
suppressors by connecting leads across existing terminals or junction points. See
Figure 2-13 earlier in this section for the correct way to install them.
Summary of Contents for dipro 1500
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Page 59: ...DiPro 1500 Installation DiPro 1500 User Manual 50 Ch 2 1092000 ...
Page 77: ...Using DiPro 1500 in Initialization mode DiPro 1500 User Manual 68 Ch 4 1092000 ...
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