Watlow Series V4 - Manual (Page 11)

Output 2 Wiring
Figure 11a – Mechanical Relay Without Contact Suppression
V4T _ - _ D _ _ - _ _ _ _
Form C, rated at 8A @ 125V~ (ac) or 5A @ 240V~ (ac). Minimum load current: 100mA @ 5VÎ (dc)
Figure 11b – Solid State Relay Without Contact Suppression
V4T _ - _ K _ _ - _ _ _ _
0.5 amps (AC loads only)
18
17
16
15
14
13
Customer Supplied
Quencharc
SS2
SS2
L2
L1
Fuse
External
Load
4
5
6
18
17
16
15
14
13
8
7
OFF 1 2
18
17
16
15
14
13
L1
L2
COM
NC
NO
External
Load
Fuse
Customer
Supplied
Quencharc
4
5
6
18
17
16
15
14
13
8
7
OFF 1 2
Indication Probable Cause(s)
P o w e r • No power. • Power to unit may be off.
• Fuse may be blown.
• Breaker may be tripped.
• Safety interlock door switch etc. may be activated.
• Separate system limit control may be latched.
• Wiring may be open.
• Input Power may be incorrect.
Alarms • Alarm won’t occur. • Alarm output may be off.
• Alarm set points may be incorrect.
• Alarm may be silenced.
• Alarm sides may be incorrect.
• Controller may be in diagnostics mode.
• Alarm won’t clear. • Alarm may be latched.
• Alarm set points may be incorrect.
• Alarm hysteresis may be incorrect.
• Input may be in error condition.
Error Code Messages ( [----] in the upper display indicates a Series V4 error; error code number is visible in bottom display)
• [----] [ Er2] • Sensor underrange error (applies only to RTD units)
• [----] [`Er4] • Configuration error.
• [----] [`Er5] • Non-volatile checksum error
• [----] [`Er6] • A/D underflow error.
• [----] [`Er7] • A/D overflow error.
Troubleshooting Alarms and Errors