STS 1656 - Functional Comparison; Model Configurations with TT1652 Option; Table 6-1: Differences between Various BET Models TEST Input Operation; Table 6-2: Model Configurations with TT1652 Option

1656 & 1657 Battery Element Tester Owner’s Manual
STS Instruments Page 43 of 88
Note that in 1652 Mode, the test is ended by raising the TEST input high or opening the TEST
contacts.
6.1.2 Functional Comparison
The differences between the previous generation Model 1652 and the new 1656/1567 without
and with the TT1652 option are shown in the table below.
Test Condition
Model 1652
Standard 1656/1657-
PLC
1656/1657-PLC-TT
Start Test
Short Pins 3 & 5 on
Test Connector
Momentary Short on
PLC pin 12 to Common
Short PLC Pins 12 & 5
Stop Test
Open Pins 3 & 5 on
Test Connector
Momentary Short on
PLC pin 13 to Common
(RESET)
Open PLC Pins 12 & 5
Programmed Test
Duration
N/A
Test Duration = Test
Interval x Test Counter
or Cont.
Test Duration Setting
Ignored
Table 6-1: Differences between various BET Models TEST Input operation
6.1.3 Model Configurations with TT1652 Option.
MODEL
DESCRIPTION
PART
NUMBER
NOTES
1656-PLC-TT
1657-PLC-TT
BET with 1652 Test
Trigger Level Sense
Mode
TT1652
The -PLC interface is required.
Must be specified at time of order.
For field upgrades, contact
customer service.
Included with 070 Adapter Module
unless otherwise specified. Refer
to Type 070 section for details
Table 6-2: Model Configurations with TT1652 Option