NEC DS1000 Correspondence Course Workbook page 105

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NEC America
DS1000/2000 Correspondence Course
Connecting to the CPRU Relays
Any keyset extension that receives Door Box chimes can control the CPRU
relay, which in turn typically enables an electric strike on an entrance door
next to a Door Box. After answering the Door Box chimes, the extension user
can press a FLASH or a soft key to enable the associated relay. The visitor at
the door can then enter without having an employee open the entrance for
them. The control relays are normally open and close when active. Note that
if you use a relay for External Paging Control, you cannot also use it for
Door Box strike control.
To connect to the CPRU Relays:
1. Find an available connector in a station cable and make sure it is cor-
rectly punched down at the 66M1-50 block.
Follow standard color code order. Be sure the block is properly
cross-connected.
2. For the connector chosen, locate pins 3T and 3R (see below) and connect
to the device the relays will control.
3. Plug the modular jack into the CPU modular connector.
Be sure the equipment connected to the relays is compatible with
the following CPU relay specifications:
The following products should help if you make your own cables:
Suttle SE-266-8K 8 Position Modular Plug (requires an SE-166
or SE-166-6 modular crimping tool).
Hubbell BRFTP4P Snap-On 8 Position Modular Plug (does not
require a special crimping tool).
Check with your local supplier for other comparable products.
RJ61X Port
To CPU
Pin Designation
Mod Jack
1 4T
2 3T
3 2T
4 1R
5 1T
6 2R
7 3R
8 4R
80000 - 18
Note
reversal
Connecting Control Relays
DS2000 System Installation
Maximum Load:
Maximum Initial
Contact Resistance:
Configuration:
To 66 Block
WHT-BLU (1T)
BLU-WHT (1R)
WHT-ORN (2T)
ORN-WHT (2R)
WHT-GRN (3T)
GRN-WHT (3R)
WHT-BRN (4T)
BRN-WHT (4R)
60 mA @ 30 VDC
10 mA @ 90 VDC
50 mOhms
Normally open
Page Out
Music In
Relay Contacts
No Connection
DS1000/2000 Workbook 105