Model K-AB-D25 / M34 Page 3
MANUAL CONTROL
A front panel three position switch allows Automatic or Manual Control. In the AUTO position, the K-AB
switches on the selected Control Signal. In the Manual A or B Position, these controls are locked out
and the relays assume the selected position.
Status Indication
Two front panel LED's indicate switch status. Remote alarms or displays can be controlled by the K-AB
status signals, form C relay contacts. Status contacts are connected on the 9 pin (standalone) or 50 pin
(rack) connectors. See Appendix A for connector pin assignments.
SPECIFICATIONS
D25 Interface Three 25 Pin D Subminiature, Female Connectors.
23 leads switched. Pins 1 and 7 are Common
M34 Interface 34 Pin ‘M’ type Winchester Connectors
19 leads switched: C,D,E,F,H,J,K,L,P,R,S.T,U,V,W,X,Y,AA,BB.
Pins A and B are Common.
Indicators Two Red LEDs indicate Switch status A or B.
LED's are driven by extra relay contacts.
Stand Alone Enclosure Height....2.75" Width.....8.00"
Depth.....6.25" Weight....1.20 lbs.
Power Source; UL Approved Wall Mounted Power
Supply. 115 VAC 60 Hz
External Control and Status Interface;
9 pin D Subminiature, Female
Rack Mounted Standard 19" equipment Cabinet Mount, 8.75" high.
Card Nest Model K-AB-R-12 Accepts up to 12 cards per nest.
Includes power supply for 115 VAC 60Hz.
External Relay Controls and Status Contacts
Via Two 50 Pin Telco Connectors, Female
Control Circuits EIA RS-232/V.35, External:
Standard EIA RS-232C
Maximum Input + 30 VDC
TTL, External:
Maximum Input +5.5 VDC
Status Signals Contacts Form C, 1A @ 30 VDC. Not protected,
Use proper external suppression.
